CALVERT SOCIAL INVESTMENT FUND
497, 1995-10-04
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PROSPECTUS
January 31, 1995 as Revised September 30, 1995

CALVERT SOCIAL INVESTMENT FUND

Money Market Portfolio
Managed Growth Portfolio
Bond Portfolio
Equity Portfolio

Introduction to the Fund

Calvert  Social  Investment  Fund seeks to provide  growth of capital or current
income through investment in enterprises that make a significant contribution to
society  through  their  products  and  services  and  through  the way  they do
business.  Investments  are selected on the basis of their ability to contribute
to the dual objectives of the Fund. Potential investments are first screened for
financial  soundness and then evaluated according to the Fund's social criteria.
An  investment  in the  Fund is  neither  insured  nor  guaranteed  by the  U.S.
Government.  There can be no assurance  that the Money Market  Portfolio will be
successful  in  maintaining  a constant net asset value of $1.00 per share.  The
Fund has four different  Portfolios,  each with a different investment objective

The Money  Market  Portfolio  invests  in money  market  instruments,  including
repurchase  agreements  with  banks and  brokers  secured  by such  instruments,
selected in accordance with the Fund's investment and social criteria. The Money
Market  Portfolio  seeks to  maintain  a constant  net asset  value of $1.00 per
share. 

The Managed Growth Portfolio  maintains an actively managed  portfolio of
stocks,  bonds and money  market  instruments  selected  with a concern  for the
investment  and social impact of each  investment.  


The Bond Portfolio  invests primarily in corporate bonds and other straight debt
securities,  selected  in  accordance  with the  Fund's  investment  and  social
criteria. 


The Equity Portfolio  maintains an actively managed portfolio of stocks selected
with a concern for the investment and social impact of each investment.

Purchase  Information The
Managed Growth,  Bond, and Equity  Portfolios offer two classes of shares,  each
with different expense levels and sales charges.  You may choose to purchase (i)
Class A shares,  with a sales charge imposed at the time you purchase the shares
("front-end  sales  charge");  or (ii)  Class C shares  which  impose  neither a
front-end  sales charge nor a contingent  deferred sales charge.  Class C shares
are not  available  through all  dealers.  Class C shares have a higher level of
expenses  than  Class  A  shares,   including  higher  Rule  12b-1  fees.  These
alternatives  permit you to choose the method of purchasing  shares that is most
beneficial to you,  depending on the amount of the purchase,  the length of time
you expect to hold the shares, and other  circumstances.  See "Alternative Sales
Options" for further details.  

To Open an Account Call your broker,  or complete
and return the enclosed Account Application. Minimum investment is $1,000. About
this Prospectus Please read this Prospectus before investing.  It is designed to
provide you with  information you ought to know before investing and to help you
decide if the  Fund's  goals  match  your own.  Keep this  document  for  future
reference. A Statement of Additional Information for the Fund (dated January 31,
1995)  has been  filed  with  the  Securities  and  Exchange  Commission  and is
incorporated  by reference.  This free  Statement is available upon request from
the Fund:  800-368-2748.

================================================================================
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED
BY THE SECURITIES AND EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION,
NOR HAS THE FEDERAL OR ANY STATE SECURITIES COMMISSION PASSED ON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS.  ANY  REPRESENTATION  TO THE CONTRARY IS A CRIMINAL
OFFENSE. 

SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR
ENDORSED BY, ANY BANK,  AND ARE NOT FEDERALLY  INSURED BY THE FDIC,  THE FEDERAL
RESERVE BOARD, OR ANY OTHER AGENCY.  WHEN INVESTORS SELL SHARES OF THE FUND, THE
VALUE MAY BE HIGHER OR LOWER THAN THE AMOUNT ORIGINALLY PAID.

<PAGE>

HIGHLIGHTS

INVESTMENT OBJECTIVES AND POLICIES

Calvert  Social  Investment  Fund  is  designed  to  provide  opportunities  for
investors  seeking  growth of capital or current  income  through  investment in
enterprises  that make a  significant  contribution  to  society  through  their
products and  services  and through the way they do  business.  The Money Market
Portfolio seeks to provide the highest level of current income,  consistent with
liquidity, safety and stability, through investment in money market instruments,
including securities issued or guaranteed by agencies of the U.S. Government and
repurchase  agreements  with  banks and  brokers  secured  by such  instruments,
selected in accordance with the Fund's investment and social criteria. The Money
Market  Portfolio is designed for short-term  cash  management and for investors
needing  stability of principal.  The Money Market Portfolio seeks to maintain a
constant net asset value of $1.00 per share.  The Managed Growth Portfolio seeks
to  achieve a total  return  above the rate of  inflation  through  an  actively
managed,  diversified  portfolio of common and preferred stocks, bonds and money
market  instruments which offer income and capital growth  opportunity and which
satisfy the investment and social concern criteria  established by the Fund. The
Bond  Portfolio  seeks  to  provide  as high a level  of  current  income  as is
consistent  with prudent  investment  risk and  preservation  of capital through
investment in bonds and other straight debt securities, selected pursuant to the
Fund's  investment and social  criteria.  The Equity  Portfolio  seeks growth of
capital through investment in the equity securities of issuers within industries
perceived to offer  opportunities for potential  capital  appreciation and which
satisfy the Fund's  investment  and social  criteria.  There can be no assurance
that the Fund will be  successful in meeting its  investment  objectives or that
the Money Market Portfolio will maintain a constant net asset value of $1.00 per
share. For a further description of the Fund's four Portfolios and discussion of
the Fund's  investment  techniques,  see "Investment  Objectives and Policies,"
"Investment Selection Process" and "Additional Investment Policies."


EXPERTISE IN THE MANAGEMENT OF THE FUND

The Fund's  Investment  Advisor is Calvert  Asset  Management  Company,  Inc., a
subsidiary  of Acacia Mutual Life  Insurance  Company of  Washington,  D.C. U.S.
Trust Company of Boston is the Investment Sub-Advisor to the Bond Portfolio, 
Sub-Advisors for the Managed Growth Portfolio include U.S. Trust, NCM Capital 
Management Group, Inc., Brown Capital Management, Inc., Fortaleza Asset 
Management, Inc., and Frontier Capital Management Company, Inc. CAM manages a 
portion of the fixed-income assets.  Loomis,  Sayles & Company,  L.P.  ("Loomis,
Sayles")  is the Investment  Sub-Advisor to the Equity Portfolio.  (See 
"Management of the Fund," "Investment Selection Process," and "Additional 
Investment Policies.")

DIVERSIFICATION OF INVESTMENTS

By pooling the funds of many investors with similar investment  objectives,  the
Fund gives each an opportunity to benefit from a broadly diversified  portfolio,
a benefit  available  ordinarily  only to investors  with  substantial  capital.
Although  the  Fund's  social  criteria  and  consideration  tend to  limit  the
availability  of  investment  opportunities  more than is  customary  with other
investment companies, the Advisors of the Fund believe that there are sufficient
investment  opportunities  to permit full investment among issuers which satisfy
the Fund's  investment  and social  investment  objectives.  (See  Statement  of
Additional Information, "Investment Selection Process.") For a discussion of the
risks  which may be  associated  with  investments  in  repurchase  and  reverse
repurchase  agreements,  privately placed securities,  non-investment grade debt
securities,   the  securities  of  foreign  issuers,  and  options  and  futures
contracts,  see  "Additional  Investment  Policies"  and  in  the  Statement  of
Additional  Information,  "Investment  Objectives  and Policies" and  "Portfolio
Transactions."

PURCHASE OF FUND SHARES

There is no sales charge on shares of the Money Market Portfolio. Class A shares
of the  Managed  Growth,  Bond,  and  Equity  Portfolios  are sold  subject to a
front-end  sales charge which  varies  according to the dollar  amount of shares
purchased (see "How to Buy Shares").

Purchases of shares of the Fund may be made by mail, bank wire, electronic funds
transfer,  through the Fund's branch office or through brokers. (See "How to Buy
Shares.")

REDEMPTION OF FUND SHARES

Shares of each  Portfolio  may be  redeemed  at any time at no charge at the net
asset value next determined after a proper redemption request is received by the
Fund's  transfer  agent.  Investors  may redeem  shares by mail or by telephone,
through  brokers,  or, for investors in the Money Market  Portfolio,  by writing
drafts in the amount of $250 or more against their account  balances.  (See "How
to Sell Your Shares.")

GENERAL INFORMATION

The Fund is an open-end,  diversified management investment company organized as
a  Massachusetts  business trust under a Declaration of Trust dated December 14,
1981, and is a series  company.  The Money Market and Managed Growth  Portfolios
commenced  operations  in  October  1982,  and the  Bond and  Equity  Portfolios
commenced  operations in August 1987. The Fund's  authorized  capital and shares
being  offered by this  Prospectus  consist of an unlimited  number of shares of
beneficial  interest of no par value which may be issued in series.  Shares have
equal  rights  with all other  shares of the same class and series as to voting,
dividends and liquidation.

FUND EXPENSES

<TABLE>
<CAPTION>


                                                      Money Market Portfolio
                                                      Class A
<S>                                                   <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a           None
    percentage of offering price)

    Contingent Deferred Sales Charge                  None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)


    Management Fees                                   0.50%
    Rule 12b-1 Service and Distribution Fees
                                                      0.00%
    Other Expenses                                    0.37%
    Total Fund Operating Expenses                     0.87%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>

</TABLE>

<TABLE>
<CAPTION>

                                                      Managed Growth Portfolio
                                                      Class A
<S>                                                   <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a           4.75%
    percentage of offering price)

    Contingent Deferred Sales Charge                  None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)

    Management Fees                                   0.70%
    Rule 12b-1 Service and Distribution Fees
                                                      0.25%
    Other Expenses                                    0.31%
    Total Fund Operating Expenses                     1.26%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>
<TABLE>
<CAPTION>

                                                      Managed Growth Portfolio
                                                      Class C
<S>                                                   <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a           None
    percentage of offering price)

    Contingent Deferred Sales Charge                  None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)

    Management Fees                                   0.70%
    Rule 12b-1 Service and Distribution Fees
                                                      1.00%
    Other Expenses                                    0.84%
    Total Fund Operating Expenses                     2.54%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>
<TABLE>
<CAPTION>

                                                       Bond Portfolio
                                                       Class A
<S>                                                    <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a            3.75%
    percentage of offering price)

    Contingent Deferred Sales Charge                   None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)

    Management Fees                                    0.65%
    Rule 12b-1 Service and Distribution Fees
                                                       0.25%
    Other Expenses                                     0.37%
    Total Fund Operating Expenses                      1.27%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>
<TABLE>
<CAPTION>

                                                       Bond Portfolio
                                                       Class C
<S>                                                    <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a            None
    percentage of offering price)

    Contingent Deferred Sales Charge                   None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)

    Management Fees                                    0.65%
    Rule 12b-1 Service and Distribution Fees
                                                       1.00%
    Other Expenses                                     0.89%
    Total Fund Operating Expenses                      2.54%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>
<TABLE>
<CAPTION>

                                                  Equity Portfolio
                                                  Class A
<S>                                               <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a            4.75%
    percentage of offering price)

    Contingent Deferred Sales Charge                   None



B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)


    Management Fees                                    0.70%
    Rule 12b-1 Service and Distribution Fees
                                                       0.25%
    Other Expenses                                     0.48%
    Total Fund Operating Expenses                      1.43%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>
<TABLE>
<CAPTION>

                                                  Equity Portfolio
                                                  Class C
<S>                                               <C>

A.  Shareholder Transaction Costs
    Maximum Sales Charge on Purchases (as a            None
    percentage of offering price)

    Contingent Deferred Sales Charge                   None


B.  Annual Fund Operating Expenses<F1>

    (as a percentage of net assets, net of any
    applicable expense reimbursement/fee waiver)


    Management Fees                                    0.70%
    Rule 12b-1 Service and Distribution Fees
                                                       1.00%
    Other Expenses                                     1.23%
    Total Fund Operating Expenses                      2.93%

<FN>
<F1>
Expense ratios are based on expenses for fiscal year 1994, except that ratios
for the Class A shares of the Bond and Equity Portfolios have been restated to
reflect expenses anticipated in the current fiscal year.
</FN>
</TABLE>

<TABLE>
<CAPTION>


C.  Example:  You  would  pay the  following  expenses  on a $1,000  investment,
assuming (1) 5% annual return and (2) redemption at the end of each period:

Fund                                1 Year       3 Years      5 Years   10 Years
<S>                                   <C>         <C>          <C>          <C>

Money Market Portfolio

Class A                              $9           $28          $48          $107

Managed Growth Portfolio

Class A<F2>                          $60          $86          $113         $193
Class C                              $26          $79          $135         $288

Bond Portfolio

Class A<F2>                          $50          $76          $105         $185
Class C                              $26          $79          $135         $288

Equity Portfolio

Class A<F2>                          $61          $91          $122         $211
Class C                              $30          $91          $154         $325

<FN>
<F2>
Assumes payment of maximum initial sales charge at time of purchase.
</FN>
</TABLE>


Explanation of Table: The purpose of the table is to assist you in understanding
the various  costs and expenses  that an investor in the Fund may bear  directly
(shareholder transaction costs) or indirectly (annual fund operating expenses).

A. Shareholder Transaction Costs are charges you pay when you buy or sell shares
of the Fund.  See "Reduced Sales Charges" at Exhibit A to see if you qualify for
possible  reductions  in the sales charge.  If you request a wire  redemption of
less than $1,000, you will be charged a $5 wire fee.

B.  Annual  Fund  Operating  Expenses.  Management  Fees are paid by the Fund to
Calvert Asset Management Company, Inc.  ("Investment  Advisor") for managing the
Fund's   investments   and  business   affairs.   Management  fees  include  the
Sub-Advisory  fee paid by the  Investment  Advisor to the Sub-Advisors of the 
Portfolios.  The  Management  fees for the Equity Portfolio are subject to a 
performance  adjustment  after June 1995, which could cause  the fee to be as 
high  as  0.90%  or as low as  0.50%,  depending  on the Portfolio's performance
relative to the Standard & Poor 500 Composite Index. The Management fees for the
Managed Growth Portfolio are subject to a performance adjustment, after January
1, 1997, which could cause the fee to be as high as 0.85% or as low as 0.55%,
depending on the Portfolio's performance relative to the Sub-Advisor's Relevant
Index.  Fund incurs  Other  Expenses for  maintaining  shareholder  records,  
furnishing shareholder  statements and reports,  and other  services.  
Management  Fees and Other  Expenses  have already been  reflected in the Fund's
yield or share price and are not charged directly to individual shareholder 
accounts. For fiscal year 1994, the Investment  Advisor  reimbursed a portion of
the expenses of the Money Market Portfolio. If the Advisor had not made such 
reimbursements,  the expenses of the Money Market  Portfolio as a percentage of
average daily net assets would have been 1.05%.  The Advisor also reimbursed  
expenses of the Class C shares of the Managed Growth, Bond, and Equity 
Portfolios, due to expense limitations.  If the Advisor had not made such  
reimbursements,  the  annualized  expenses of the Class C  Shares  of the  
Managed  Growth,  Bond,  and  Equity  Portfolios,  as a percentage  of average 
daily net  assets,  would have been 3.93%,  12.01%,  and 7.35%,  respectively. 
Please refer to the section  "Management of the Fund" for further information.

The Fund's Rule 12b-1 fees include an  asset-based  sales  charge.  Thus,  it is
possible  that  long-term  shareholders  in the Fund may pay more in total sales
charges  than the  economic  equivalent  of the maximum  front-end  sales charge
permitted by rules of the National Association of Securities Dealers, Inc.

C.  Example of  Expenses.  The  example,  which is  hypothetical,  should not be
considered a  representation  of past or future  expenses.  Actual  expenses and
return may be higher or lower than those shown.


FINANCIAL HIGHLIGHTS

The following  tables provide  information  about the financial  history of each
Portfolio's  Class A shares.  They express the  information in terms of a single
Class A share outstanding for the respective  Portfolio  throughout each period.
Information  for Class C shares is presented only since their inception on March
1, 1994.  The tables have been  audited by the  independent  accountants,  whose
report is included in the Annual Report to  Shareholders of the Fund. The tables
should be read in  conjunction  with the financial  statements and their related
notes.  The current Annual Report to  Shareholders  is incorporated by reference
into the Statement of Additional Information

<TABLE>
<CAPTION>

Money Market Portfolio                                 Year Ended September 30,
                                                       ========================
                                                           1994          1993
<S>                                                        <C>           <C>

Net asset value, beginning of year ...................... $1.00        $1.00

Income from investment operations
Net investment income ................................      .031         .025
Distributions to shareholders
Dividends from net investment income .................     (.031)       (.025)
Net asset value, end of year .........................     $1.00         $1.00

Total return<F3> ........................................   3.13%        2.56%

Ratio of expenses to average net assets ..............      .87%         .87%

Ratio of net income to average net assets ............     3.07%        2.54%

Increase reflected in net income ratio due to
     expense reimbursement ...........................      .18%         .20%

Net assets, end of year ...........................    $143,779,085 $144,984,787
Number of shares outstanding at end of year (in
     thousands) ........................................     143,826    145,031
<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>

<TABLE>
<CAPTION>

Money Market Portfolio                                Year Ended September 30,
                                                      ========================
                                                              1992
<S>                                                           <C>

Net asset value, beginning of year ...........................$1.00
Income from investment operations
Net investment income ..........................................037
Distributions to shareholders
Dividends from net investment income .........................(.037)
Net asset value, end of year .................................$1.00

Total return<F3> ............................................. 3.79%

Ratio of expenses to average net assets ....................... .87%

Ratio of net income to average net assets .....................3.74%

Increase reflected in net income ratio due to
    expense reimbursement ..................................... .16%

Net assets, end of year                                 $171,339,526

Number of shares outstanding at end of year (in
     thousands)                                             171,407

<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>
<TABLE>
<CAPTION>

Money Market Portfolio                                 Year Ended September 30,
                                                       ========================
                                                       1991                 1990
<S>                                                    <C>                  <C>

Net asset value, beginning of year                    $1.00                $1.00

Income from investment operations
Net investment income                                 .061                 .076
Distributions to shareholders
Dividends from net investment income                  (.061)              (.076)
Net asset value, end of year                          $1.00                $1.00

Total return<F3>                                      6.32%                7.85%

Ratio of expenses to average net assets               .87%                  .85%

Ratio of net income to average net assets             6.12%                7.53%

Increase reflected in net income ratio due to
     expense reimbursement                             .13%                 .14%

Net assets, end of year                        $193,947,095         $182,148,038

Number of shares outstanding at end of year (in
     thousands)                                     194,015              182,193

<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>
<TABLE>
<CAPTION>

Money Market Portfolio                                 Year Ended September 30,
                                                       ========================
                                                      1989                  1988
<S>                                                   <C>                   <C>

Net asset value, beginning of year                   $1.00                 $1.00
Income from investment operations
Net investment income                                 .084                  .067
Distributions to shareholders
Dividends from net investment income                (.084)                (.067)
Net asset value, end of year                         $1.00                 $1.00

Total return<F3>                                     6.47%                 5.31%

Ratio of expenses to average net assets               .85%                  .84%

Ratio of net income to average net assets            8.40%                 6.47%

Increase reflected in net income ratio due to
     expense reimbursement                            .17%                  .27%

Net assets, end of year                        $139,662,354          $81,252,613

Number of shares outstanding at end of year (in
     thousands)                                     139,707               81,278

<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>
<TABLE>
<CAPTION>

Money Market Portfolio                                 Year Ended September 30,
                                                       ========================
                                                       1987
<S>                                                    <C>

Net asset value, beginning of year                    $1.00
Income from investment operations
Net investment income                                 .057
Distributions to shareholders
Dividends from net investment income                  (.057)
Net asset value, end of year                          $1.00

Total return<F3>                                      4.62%

Ratio of expenses to average net assets               .86%

Ratio of net income to average net assets             5.52%

Increase reflected in net income ratio due to
     expense reimbursement                            .24%

Net assets, end of year                               $66,284,868

Number of shares outstanding at end of year (in
     thousands)                                       66,288

<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>
<TABLE>
<CAPTION>


Money Market Portfolio                                 Year Ended September 30,
                                                       ========================
                                                      1986                  1985
<S>                                                   <C>                   <C>

Net asset value, beginning of year                    $1.00                $1.00
Income from investment operations
Net investment income                                 .067                  .084
Distributions to shareholders
Dividends from net investment income                (.067)                (.084)
Net asset value, end of year                         $1.00                 $1.00

Total return<F3>                                     4.77%                 5.44%

Ratio of expenses to average net assets               .84%                  .81%

Ratio of net income to average net assets            6.51%                 8.03%

Increase reflected in net income ratio due to
     expense reimbursement                            .34%                  .46%

Net assets, end of year                        $58,248,982           $49,509,472

Number of shares outstanding at end of year (in
     thousands)                                     58,248                49,509

<FN>
<F3>
Total Return is not audited for years prior to 1994.
</FN>
</TABLE>
<TABLE>
<CAPTION>

Managed Growth Portfolio                               Year Ended September 30,
                                                       ========================
                                            Class C Shares
                                            From Inception       Class A Shares
                                            (March 1, 1994)          1994
<S>                                           <C>                     <C>
                                           

Net asset value, beginning of year            $30.43                $30.85            

Income from investment operations
Net investment income                            .51                   .93                    
Net realized and unrealized gain (loss 
         investments                           (1.66)               (1.83)                  
Total from investment operations               (1.15)               (1.83)                 

Distributions to shareholders
Dividends from net investment income           (.63)                 (.95)                  
Distribution from capital gains                  --                  (.23)                  
Total distributions                            (.63)                (1.18)                   

Total increase (decrease) in net asset value   (1.78)               (2.08)                

Net asset value, end of year                   $28.6                $28.77                  

Total return<F4>                               (3.30)%              (2.95)%                 

Ratio of expenses to average net assets        2.47%(a)               1.24%                 

Ratio of net income to average net assets      1.83%(a)               3.14%                

Increase reflected in net income ratio due to
     expense reimbursement                     1.46%(a)                --                      

Portfolio turnover                              34%                     34%

Net assets, end of year                       $1,892,512          $512,026,969           

Number of shares outstanding at end of year (in
     thousands)                                   66                  17,800                  


<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Managed Growth Portfolio                          Year Ended September 30,
                                                  ==========================

                                                       Class A Shares
                                                            1993
<S>                                                         <C>

Net asset value, beginning of year                          $29.35

Income from investment operations
Net investment income                                          .95
Net realized and unrealized gain (loss) on
         investments                                          1.91
Total from investment operations                              2.86

Distributions to shareholders
Dividends from net investment income                          (.95)
Distribution from capital gains                               (.41)
Total distributions                                          (1.36)

Total increase (decrease) in net asset value                  1.50

Net asset value, end of year                                $30.85

Total return<F4>                                             9.98%

Ratio of expenses to average net assets                      1.25%

Ratio of net income to average net assets                    3.25%

Increase reflected in net income ratio due to
     expense reimbursement                                     --

Portfolio turnover                                             33%

Net assets, end of year                                  $536,169,525

Number of shares outstanding at end of year (in
     thousands)                                             17,378

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Managed Growth Portfolio                                      Class A Shares
                                                       Year Ended September 30,
                                                       ========================
                                                     1992                 1991
<S>                                                  <C>                  <C>

Net asset value, beginning of year                 $28.42                $25.87

Income from investment operations
Net investment income                               1.07                  1.20
Net realized and unrealized gain (loss) on
         investments                                1.82                  3.10
Total from investment operations                    2.89                  4.30

Distributions to shareholders
Dividends from net investment income               (1.95)                (1.00)
Distribution from capital gains                     (.01)                 (.75)
Total distributions                                (1.96)                (1.75)

Total increase (decrease) in net asset value          .93                 2.55

Net asset value, end of year                          $29.35             $28.42

Total return<F4>                                      10.71%             17.51%

Ratio of expenses to average net assets               1.28%               1.31%

Ratio of net income to average net assets             3.90%               4.73%

Increase reflected in net income ratio due to
     expense reimbursement                            --                    --

Portfolio turnover                                    14%                   25%

Net assets, end of year                      $419,513,646          $329,922,298

Number of shares outstanding at end of year (in
     thousands)                                    14,292                11,609

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Managed Growth Portfolio                                        Class A Shares
                                                       Year Ended September 30,
                                                       ========================
                                                      1990                  1989
<S>                                                   <C>                   <C>


Net asset value, beginning of year                  $27.72                $25.04

Income from investment operations
Net investment income                                 1.09                  1.15
Net realized and unrealized gain (loss) on
         investments                                  (1.85)                2.97
Total from investment operations                      (.76)                 4.12

Distributions to shareholders
Dividends from net investment income                 (.63)                 (.98)
Distribution from capital gains                      (.46)                 (.46)
Total distributions                                 (1.09)                (1.44)

Total increase (decrease) in net asset value          (1.85)                2.68

Net asset value, end of period                      $25.87                $27.72

Total return<F4>                                    (2.87)%               17.31%

Ratio of expenses to average net assets              1.30%                 1.29%

Ratio of net income to average net assets            4.85%                 4.49%

Increase reflected in net income ratio due to
     expense reimbursement                            --                    --

Portfolio turnover                                    24%                   34%

Net assets, end of year                       $242,616,980          $212,178,112

Number of shares outstanding at end of year (in
     thousands)                                      9,377                 7,654

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Managed Growth Portfolio                                 Class A Shares
                                                      Year Ended September
                                                               30,
                                                      ======================
                                                              1988
<S>                                                   <C>

Net asset value, beginning of year                    $27.44

Income from investment operations
Net investment income                                 1.09
Net realized and unrealized gain (loss) on
         investments                                  (1.91)
Total from investment operations                      (.82)

Distributions to shareholders
Dividends from net investment income                  (1.08)
Distribution from capital gains                       (.50)
Total distributions                                   (1.58)

Total increase (decrease) in net asset value          (2.40)

Net asset value, end of period                        $25.04

Total return<F4>                                     (2.48)%

Ratio of expenses to average net assets               1.34%

Ratio of net income to average net assets             4.30%

Increase reflected in net income ratio due to
     expense reimbursement                            --

Portfolio turnover                                    46%

Net assets, end of year                               $171,930,639

Number of shares outstanding at end of year (in
     thousands)                                       6,866

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Managed Growth Portfolio                                     Class A Shares
                                                       Year Ended September 30,
                                                       ========================
                                                      1987               1986
<S>                                                    <C>               <C>

Net asset value, beginning of year                    $23.25             $18.92

Income from investment operations
Net investment income                                   .65                 .62
Net realized and unrealized gain (loss) on investments
                                                       4.35                4.64
Total from investment operations                       5.00                5.26

Distributions to shareholders
Dividends from net investment income                  (.70)               (.77)
Distribution from capital gains                       (.11)               (.16)
Total distributions                                   (.81)               (.93)

Total increase (decrease) in net asset value          4.19                4.33

Net asset value, end of year                        $27.44              $23.25

Total return<F4>                                    22.04%               28.61%

Ratio of expenses to average net assets              1.29%                1.30%

Ratio of net income to average net assets            2.82%                3.42%

Increase reflected in net income ratio due to
     expense reimbursement                            --                   --

Portfolio turnover                                    14%                   24%

Net assets, end of year                        $174,217,805         $86,404,783

Number of shares outstanding at end of year (in
     thousands)                                     6,348                 3,761

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Managed Growth Portfolio                                 Class A Shares
                                                      Year Ended September
                                                               30,
                                                      ======================
                                                              1985
<S>                                                   <C>

Net asset value, beginning of year                    $17.03

Income from investment operations
Net investment income                                 .92
Net realized and unrealized gain (loss) on investments
                                                      1.97
Total from investment operations                      2.89

Distributions to shareholders
Dividends from net investment income                  (1.00)
Distribution from capital gains                       --
Total distributions                                   (1.00)

Total increase (decrease) in net asset value          1.89

Net asset value, end of year                          $18.92

Total return<F4>                                      17.04%

Ratio of expenses to average net assets               1.30%

Ratio of net income to average net assets             5.96%

Increase reflected in net income ratio due to
     expense reimbursement                            --

Portfolio turnover                                    54%

Net assets, end of year                               $25,622,145

Number of shares outstanding at end of year (in
     thousands)                                       1,345

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Bond Portfolio                                      Year Ended September 30,
                                                    ========================
                                             Class C Shares          
                                             From Inception    Class A Shares
                                             (March 1, 1994)      1994 
                                                                         
<S>                                                    <C>        <C>         
                                                                              
Net asset value, beginning of year                     $16.71     $17.77      
                                                                              
Income from investment operations                                             
Net investment income                                     .45        .94      
Net realized and unrealized gain (loss) on                                    
         investments                                    (1.23)     (1.81)     
Total from investment operations                         (.78)      (.87)     
                                                                              
Distributions to shareholders                                                 
Dividends from net investment income                     (.50)      (.94)     
Distribution from capital gains                          --         (.47)     
Total distributions                                      (.50)      (1.41)    
                                                                              
Total increase (decrease) in net asset value             (1.28)     (2.28)    
                                                                              
Net asset value, end of year                            $15.43     $15.49     
                                                                              
Total return<F4>                                        (4.13)%   (5.18)%     
                                                                              
Ratio of expenses to average net assets                 2.41%(a)    1.10%     
                                                                              
Ratio of net income to average net assets               4.63%(a)    5.64%    
                                                                             
Increase reflected in net income ratio due                                   
     to expense reimbursement                           9.60%(a)     --       
                                                                              
Portfolio turnover                                        19%         19%    
                                                                              
Net assets, end of year                                $314,804   $61,572,858 
                                                                              
Number of shares outstanding at end of year                                   
      (in thousands)                                       20        3,976   
                                                                                            
                                                                              
<FN>                                                                          
<F4>                                                                          
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Bond Portfolio                                        Year Ended September
                                                               30,
                                                      ======================


                                                         Class A Shares
                                                              1993
<S>                                                   <C>

Net asset value, beginning of year                    $17.05

Income from investment operations
Net investment income                                 1.08
Net realized and unrealized gain (loss) on
         investments                                  .85
Total from investment operations                      1.93

Distributions to shareholders
Dividends from net investment income                  (1.08)
Distribution from capital gains                       (.13)
Total distributions                                   (1.21)

Total increase (decrease) in net asset value          .72

Net asset value, end of year                          $17.77

Total return<F4>                                      11.89%

Ratio of expenses to average net assets               .79%

Ratio of net income to average net assets             6.33%

Increase reflected in net income ratio due to
     expense reimbursement                            .20%

Portfolio turnover                                    28%

Net assets, end of year                               $67,134,129

Number of shares outstanding at end of year (in
     thousands)                                       3,778


<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Bond Portfolio                                             Class A Shares
                                                       Year Ended September 30,
                                                       ========================
                                                    1992                  1991
<S>                                                 <C>                   <C>

Net asset value, beginning of period                $16.48                $15.34

Income from investment operations
Net investment income                                1.15                  1.21
Net realized and unrealized gain on investments
                                                      .78                   1.15
Total from investment operations                      1.93                  2.36

Distributions to shareholders
Dividends from net investment income                (1.15)                (1.21)
Distribution from capital gains                      (.21)                 (.01)
Total distributions                                 (1.36)                (1.22)

Total increase in net asset value                     .57                   1.14

Net asset value, end of period                      $17.05                $16.48

Total return<F4>                                    12.29%                15.95%

Ratio of expenses to average net assets               .75%                  .77%

Ratio of net income to average net assets            6.90%                 7.63%

Increase reflected in net investment income ratio
     due to expense reimbursement                     .24%                  .27%

Portfolio turnover                                     29%                   24%

Net assets, end of period                      $50,572,499           $33,258,675

Number of shares outstanding at end of period (in
     thousands)                                      2,965                 2,018

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Bond Portfolio                                         Year Ended September 30,
                                                       ========================
                                                     1990                  1989
<S>                                                  <C>                  <C>

Net asset value, beginning of period                $15.71                $15.43

Income from investment operations
Net investment income                                 1.24                  1.31
Net realized and unrealized gain (loss) on
         investments                                  (.32)                 .30
Total from investment operations                      .92                   1.61

Distributions to shareholders
Dividends from net investment income                (1.24)                (1.29)
Distribution from capital gains                      (.05)                 (.04)
Total distributions                                 (1.29)                (1.33)

Total increase (decrease) in net asset value          (.37)                 .28

Net asset value, end of period                      $15.34                $15.71

Total return<F4>                                     6.09%                 10.93%

Ratio of expenses to average net assets               .65%                  .17%

Ratio of net income to average net assets            8.02%                 8.53%

Increase reflected in net investment income ratio
     due to expense reimbursement                     .45%                  .92%

Portfolio turnover                                    22%                   50%

Net assets, end of period                      $23,298,395           $12,791,636

Number of shares outstanding at end of period (in
     thousands)                                       1,519                 814

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


                                                   Class A Shares
                                      Class A Shares          From Inception
                                      Year Ended Sept. 30,    (August 24, 1987)
                                      ==========================================
Bond Portfolio                                  1988           to Sept. 30, 1987


<S>                                                 <C>                   <C>

Net Asset Value, beginning of period                $14.81                $15.00

Income from investment operations
Net investment income                                 1.16                  .04
Net realized and unrealized gain (loss) on
         investments                                 .62                   (.20)
Total from investment operations                     1.78                  (.16)

Distributions to shareholders
Dividends from net investment income                 (1.16)                (.03)
Distribution from capital gains                       --                    --
Total distributions                                  (1.16)                (.03)

Total increase (decrease) in net asset value         .62                   (.19)

Net asset value, end of period                      $15.43                $14.81

Total return<F4>                                    12.32%           (13.56)%(a)

Ratio of expenses to average net assets            --                    .50%(a)

Ratio of net income to average net assets             8.14%              .34%(a)

Increase reflected in net investment income ratio
due to expense reimbursement                          1.56%             1.16%(a)

Portfolio turnover                                    27%                   --

Net assets, end of period                         $5,235,169            $344,306

Number of shares outstanding at end of period (in
     thousands)                                       339                   23

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>

Equity Portfolio                                       Year Ended September 30,
                                                       ========================
                                                 Class C Shares
                                                 From Inception   Class A Share
                                                 (March 1, 1994)     1994         
                                                                                 
<S>                                                   <C>            <C>         
                                                                                 
Net asset value, beginning of year                    $22.12         $21.43      
                                                                                 
Income from investment operations                                                
Net investment income                                   (.06)          .13       
Net realized and unrealized gain (loss) on                                       
         investments                                   (2.08)         (1.04)     
Total from investment operations                       (2.14)         (.91)      
                                                                                 
Distributions to shareholders                                                    
Dividends from net investment income                   --             (.28)      
Distribution from capital gains                        --             (.11)      
Total distributions                                    --             (.39)      
                                                                                 
Total increase (decrease) in net asset value          (2.14)         (1.30)      
                                                                                 
Net asset value, end of year                          $19.98         $20.13      
                                                                                 
Total return<F4>                                      (9.14)%        (4.33)%     
                                                                                 
Ratio of expenses to average net assets                2.75%(a)       1.27%      
                                                                                 
Ratio of net income to average net assets            (1.06)%(a)        .65%       
                                                                                 
Increase reflected in net income ratio due                                       
      to expense reimbursement                        4.60%(a)          --        
                                                                                 
Portfolio turnover                                      94%            94%       
                                                                                 
Net assets, end of year                               $670,245     $92,970,422 
                                                                                 
Number of shares outstanding at end of year                                      
      (in thousands)                                     34             4,620    
                                                                                 
                                                                                 
<FN>                                                                
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Equity Portfolio                                               Class A Shares
                                                       Year Ended September 30,
                                                       ========================
                                                      1993                  1992
<S>                                                 <C>                   <C>

Net asset value, beginning of year                  $20.03                $18.89

Income from investment operations
Net investment income                                 .21                   .17
Net realized and unrealized gain on investments
                                                      1.36                  1.20
Total from investment operations                      1.57                  1.37

Distributions to shareholders
Dividends from net investment income                 (.17)                 (.23)
Distribution from capital gains                       --                    --
Total distributions                                  (.17)                 (.23)

Total increase in net asset value                     1.40                  1.14

Net asset value, end of year                        $21.43                $20.03

Total return<F4>                                     7.82%                 7.36%

Ratio of expenses to average net assets              1.13%                 1.17%

Ratio of net income to average net assets            1.06%                 1.02%

Increase reflected in net investment income ratio
     due to expense reimbursement                     --                    --

Portfolio turnover                                    43%                   24%

Net assets, end of year                       $85,042,192           $64,628,809

Number of shares outstanding at end of year (in
     thousands)                                     3,968                 3,226


<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Equity Portfolio                                         Class A Shares
                                                      Year Ended September
                                                               30,
                                                      ======================
                                                              1991
<S>                                                   <C>
Net asset value, beginning of year                    $15.86

Income from investment operations
Net investment income                                 .44
Net realized and unrealized gain on investments
                                                      2.96
Total from investment operations                      3.40

Distributions to shareholders
Dividends from net investment income                  (.37)
Distribution from capital gains                       --
Total distributions                                   (.37)

Total increase in net asset value                     3.03

Net asset value, end of year                          $18.89

Total return<F4>                                      21.88%

Ratio of expenses to average net assets               1.04%

Ratio of net income to average net assets             1.94%

Increase reflected in net investment income ratio
     due to expense reimbursement                     .18%

Portfolio turnover                                    27%

Net assets, end of year                               $42,642,434

Number of shares outstanding at end of year (in
     thousands)                                       2,258

<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


Equity Portfolio                                            Class A Shares
                                                       Year Ended September 30,
                                                      =========================
                                                    1990                  1989
<S>                                                <C>                   <C>

Net asset value, beginning of year                 $18.07                $14.58

Income from investment operations
Net investment income                                 .32                   .40
Net realized and unrealized gain (loss) on
         investments                                  (2.24)                3.40
Total from investment operations                      (1.92)                3.80

Distributions to shareholders
Dividends from net investment income                 (.24)                 (.31)
Distribution from capital gains                      (.05)                 --
Total distributions                                  (.29)                 (.31)

Total increase (decrease) in net asset value          (2.21)                3.49

Net asset value, end of year                        $15.86                $18.07

Total return<F4>                                    (10.80)%              26.69%

Ratio of expenses to average net assets               .78%                  .21%

Ratio of net income to average net assets            2.64%                 2.48%

Increase reflected in net investment income ratio
     due to expense reimbursement                    .50%                  1.17%

Portfolio turnover                                    31%                   8%

Net assets, end of year                        $22,212,293           $7,927,101

Number of shares outstanding at end of year (in
     thousands)                                      1,401                 439


<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>

<TABLE>
<CAPTION>


                                                           Class A Shares
                                     Class A Shares        From Inception
                                     Year Ended Sept.     (August 24, 1987)
Equity Portfolio                          30, 1988        to Sept. 30, 1987
                                   ============================================
<S>                                           <C>                   <C>

Net asset value, beginning of period          $15.33                $15.00

Income from investment operations
Net investment income                            .87                   .02
Net realized and unrealized gain (loss) on
         investments                           (1.53)                  .31
Total from investment operations                (.66)                  .33

Distributions to shareholders
Dividends from net investment income            (.08)                  --
Distribution from capital gains                 (.01)                  --
Total distributions                             (.09)                  --

Total increase (decrease) in net asset value    (.75)                  .33

Net asset value, end of period                 $14.58               $15.33

Total return<F4>                               (4.26)%           25.56%(a)

Ratio of expenses to average net assets         --                 .50%(a)

Ratio of net income to average net assets       2.85%              .31%(a)

Increase reflected in net investment income ratio
     due to expense reimbursement               2.49%             1.50%(a)

Portfolio turnover                                23%                   --

Net assets, end of period                    $1,710,838            $264,653

Number of shares outstanding at end of period (in
     thousands)                                   117                   17


<FN>
<F4>
Total return is not annualized and does not reflect the deduction of Class A
front-end sales charge.
Total return is not audited for years prior to 1989.
(a) Annualized
</FN>
</TABLE>




INVESTMENT OBJECTIVES AND POLICIES

The Fund is designed for individual and institutional investors, including ERISA
fiduciaries,  seeking growth of capital or current income through  investment in
enterprises  that make a  significant  contribution  to  society  through  their
products and services and through the way they do business.  The Managed  Growth
Portfolio is designed for long-term  investment.  The Money Market  Portfolio is
designed for short-term  cash  management  and stability of principal.  The Bond
Portfolio is designed for current income and preservation of capital. The Equity
Portfolio is designed for capital growth.

Money Market Portfolio

The Money Market Portfolio seeks to provide the highest level of current income,
consistent with liquidity, safety and security of capital, through investment in
money  market  instruments,  including  repurchase  agreements  with  recognized
securities dealers and banks secured by such instruments, and reverse repurchase
agreements,  all selected in accordance  with the Fund's  investment  and social
criteria.  The Money Market Portfolio  attempts to maintain a constant net asset
value of $1.00 per share.

The Money Market Portfolio  invests only in high grade,  short-term money market
instruments which may include:  obligations issued or guaranteed as to principal
by the United  States  Government,  its  agencies  and  instrumentalities;  U.S.
dollar-denominated   certificates   of  deposit,   time  deposits  and  bankers'
acceptances of U.S. banks,  generally banks with assets in excess of $1 billion;
taxable  municipal  securities,   including  variable  rate  demand  notes;  and
commercial paper (including  participation  interests in loans extended by banks
to issuers of  commercial  paper) that at the date of investment is rated A-1 by
Standard & Poor's Ratings Group (S&P) or Prime-1 by Moody's Investors Service,
Inc. (Moody's), or, if not rated, is of comparable quality.

Managed Growth Portfolio

The Managed Growth  Portfolio  seeks to achieve a total return above the rate of
inflation  through an  actively  managed  portfolio  of stocks,  bonds and money
market instruments (including repurchase agreements secured by such instruments)
selected with a concern for the investment and social impact of each investment.
It is not the policy of the  Managed  Growth  Portfolio  to take risks to obtain
speculatively or aggressively high returns. There is no predetermined percentage
of assets  allocated  to either  stocks  or bonds or money  market  instruments.
Investments  are generally  selected by the two active Sub-Advisor, U.S. Trust 
Company of Boston and NCM Capital, subject to  direction  and  control by the 
Fund's  Advisor and Board of Trustees.  CAM manages a portion of the Portfolio's
fixed-income assets.  The  Investment  Advisors  determine  the mix for the 
Managed  Growth Portfolio  depending  upon  their  view of market  conditions 
and the  economic outlook.

The Managed Growth  Portfolio may purchase both common and preferred  stock. The
Portfolio  normally  invests in bonds  which are  considered  investment  grade,
including bonds which are direct or indirect obligations of the U.S. Government,
or which at the date of  investment  are rated AAA, AA, A, or BBB by S&P or Aaa,
Aa, A, or Baa by Moody's.  Bonds rated Baa or BBB are  considered  medium  grade
obligations,  possess speculative  characteristics,  and are more susceptible to
changing market conditions.  The Portfolio may purchase lower-rated  obligations
(those rated below BBB, which are considered  non-investment  grade  securities)
but no more than 20% of its assets may be  invested in  obligations  rated lower
than B. The Portfolio may purchase  without  limitation  bonds which are unrated
but of  comparable  quality  to bonds  rated B or  better as  determined  by the
Advisors  under the  supervision  of the Board of Trustees.  The Managed  Growth
Portfolio does not currently hold or intend to invest more than 5% of its assets
in non-investment  grade securities  (commonly referred to as "junk bonds"). See
the Statement of Additional  Information for additional  information  concerning
bond ratings.

Bond Portfolio

The Bond  Portfolio  seeks to provide  as high a level of  current  income as is
consistent  with prudent  investment  risk and  preservation  of capital through
investment  in bonds and  other  straight  debt  securities,  including  taxable
municipal  securities,  selected  pursuant to the Fund's  investment  and social
criteria.  The Bond Portfolio is neither  speculative  nor  conservative  in its
investment  policies  and will take  reasonable  risks in seeking to achieve its
investment  objective  of  current  income and  preservation  of  capital.  Debt
securities may be long-term,  intermediate-term,  short-term, or any combination
thereof, depending on the Advisors' evaluation of current and anticipated market
patterns  and trends;  the  Advisors  expect that the Bond  Portfolio's  average
weighted  maturity will range between 5 and 20 years. The value of the Portfolio
will vary inversely with changes in interest rates.

In seeking to achieve  these  objectives,  it is  anticipated  that under normal
conditions  the Bond  Portfolio  will  invest  at least  65% of the value of its
assets in  publicly-traded  straight  debt  securities  which have an investment
grade  rating of A or above as  determined  by a  nationally  recognized  rating
service such as S&P or Moody's,  or if unrated,  determined  to be of comparable
quality.  The Portfolio may also invest in  obligations  issued or guaranteed by
the U.S.  Government or its agencies or  instrumentalities,  or in cash and cash
equivalents.  Up to 20% of the Bond Portfolio's  total assets may be invested in
straight  debt  securities  which are not rated within the four  highest  grades
(including bonds rated below Baa or BBB and unrated securities),  in convertible
debt  securities,   convertible   preferred  and  preferred   stocks,  or  other
securities.   Bonds  rated  Baa  or  BBB,  which  are  considered  medium  grade
obligations,  possess speculative  characteristics,  and are more susceptible to
changing market conditions. The Bond Portfolio does not currently hold or intend
to invest more than 5% of its assets in  non-investment  grade securities ("junk
bonds"). See the Statement of Additional  Information for additional information
concerning bond ratings.

Equity Portfolio

The Equity  Portfolio seeks growth of capital  through  investment in the equity
securities of issuers within  industries  perceived to offer  opportunities  for
potential  capital  appreciation  and which  satisfy the Fund's  investment  and
social criteria. The Equity Portfolio is neither speculative nor conservative in
its investment policies and will take reasonable risks in seeking to achieve its
investment objective of growth of capital.

The  Equity  Portfolio  normally  invests  at least  80% of the value of its net
assets in equity securities.  Such securities include common stocks, convertible
securities  and  preferred  stocks.   For  liquidity  purposes  or  pending  the
investment of the proceeds of the sale of its shares,  the Equity  Portfolio may
invest  up to 20% of the  value  of its  assets  in  money  market  instruments,
including:    obligations   of   the   U.S.   Government,   its   agencies   and
instrumentalities;  certificates  of deposit of banks,  generally,  those having
total  assets of at least one billion  dollars;  and  commercial  paper or other
corporate  notes of investment  grade quality.  Such securities may be purchased
subject to repurchase  agreements with recognized  securities dealers and banks.
If the Equity Portfolio has assumed a temporary  defensive posture,  there is no
limitation on the percentage of its assets which may be invested in money market
instruments.  The Equity  Portfolio  does not currently hold or intend to invest
more than 5% of its assets in non-investment grade debt securities.

All  Investments  are  Selected  with a Concern  for the  Social  Impact of each
Investment  The Fund invests in accordance  with its  philosophy  that long-term
rewards  to  investors  will  come  from  those  organizations  whose  products,
services,  and methods enhance the human condition and the traditional  American
values of individual initiative, equality of opportunity and cooperative effort.

The Fund has developed the following criteria for the selection of organizations
in which it invests. The Fund recognizes, however, that these criteria represent
standards of behavior which few, if any, organizations totally satisfy and that,
as a matter of practice,  evaluation of a particular organization in the context
of these  criteria  will involve  subjective  judgment by the Fund's  Investment
Advisor and Sub-Advisors.

Given  these  considerations,  the Fund seeks to invest in a producer or service
provider which:

1.  Delivers  safe  products  and  services  in ways which  sustain  our natural
environment.  For example, the Fund looks for companies that produce energy from
renewable resources, while avoiding consistent polluters.

2. Is managed with  participation  throughout the  organization  in defining and
achieving  objectives.  For  example,  the Fund looks for  companies  that offer
employee stock ownership or profit-sharing plans.

3.  Negotiates  fairly with its workers,  provides an environment  supportive of
their wellness,  does not discriminate on the basis of race,  gender,  religion,
age,  disability,  ethnic origin, or sexual  orientation,  does not consistently
violate regulations of the Equal Employment Opportunity Commission, and provides
opportunities  for women,  disadvantaged  minorities,  and others for whom equal
opportunities  have often been denied.  For  example,  the Fund  considers  both
unionized and non-union firms with good labor relations.

4.  Fosters  awareness  of a  commitment  to human  goals,  such as  creativity,
productivity,  self-respect and responsibility,  within the organization and the
world,  and  continually  recreates  a context  within  which these goals can be
realized.  For  example,  the Fund  looks for  companies  with an above  average
commitment to community affairs and charitable giving.

The Fund will not  invest  in an  issuer  which  the  Advisors  determine  to be
significantly engaged in:

1. The production of nuclear  energy or the  manufacture of equipment to produce
nuclear energy.

2. Business activities in support of repressive regimes.

(From its inception  through most of 1993, the Fund considered South Africa
to be a repressive regime. In light of recent political  developments in South
Africa, the  Fund's  Board of  Trustees  has  determined  that  South  Africa 
no longer constitutes  a repressive  regime and that the Fund may invest in 
issuers doing business in South Africa if they meet the Fund's social criteria).


3. The manufacture of weapon systems.




The Fund will not, as a matter of operating  policy which may be changed without
the  approval  of a  majority  of the  outstanding  shares,  invest in an issuer
primarily engaged in the manufacture of alcoholic beverages or tobacco products,
or the operation of gambling casinos.

The Fund  believes  that  social  and  technological  change  will  continue  to
transform  America  and  the  world  for the  balance  of  this  century.  Those
enterprises  which  exhibit a social  awareness  measured  in terms of the above
attributes and considerations  should be better prepared to meet future societal
needs  for  goods  and  services.  By  responding  to  social  concerns,   these
enterprises  should  maintain  flexibility and further social goals. In so doing
they should not only avoid the liability  that may be incurred when a product or
service is  determined  to have a negative  social  impact or has  outlived  its
usefulness,  but also be better  positioned to develop  opportunities  to make a
profitable contribution to society. These enterprises should be ready to respond
to external  demands and ensure that over the longer term they will be viable to
provide a positive return to both investors and society as a whole.

INVESTMENT SELECTION PROCESS

Investments are selected on the basis of their ability to contribute to the dual
objectives of the Fund  Potential  investments  are first screened for financial
soundness and then  evaluated  according to the Fund's social  criteria.  To the
greatest extent possible  investments are made in companies  exhibiting unusual,
positive accomplishments with respect to one or more of the criteria.  Companies
must meet the Fund's  minimum  standards for all the  criteria.  With respect to
government securities,  the Fund invests primarily in debt obligations issued or
guaranteed  by  agencies  or  instrumentalities  of the  U.S.  Government  whose
purposes  further or are  compatible  with the Fund's social  criteria,  such as
obligations  of the Student  Loan  Marketing  Association,  rather than  general
obligations of the U.S. Government,  such as Treasury  securities.  It should be
noted  that the  Fund's  social  criteria  tend to  limit  the  availability  of
investment opportunities more than is customary with other investment companies.


The  selection  of an  organization  for  investment  by a  Portfolio  does  not
constitute  endorsement  or validation by the Fund, nor does the exclusion of an
organization  necessarily reflect failure to satisfy the Fund's social criteria.
Investors in the Fund are invited to send a brief  description of companies they
believe might be suitable for investment by the Fund.


ADDITIONAL INVESTMENT POLICIES

As a matter of  fundamental  investment  policy which cannot be changed  without
shareholder  approval, no more than 25% of the value of a Portfolio's assets may
be invested in any one industry,  no more than 5% of a Portfolio's assets may be
invested in any one company, nor may a Portfolio,  or the Fund in the aggregate,
purchase more than 10% of the voting securities of any issuer.

The Managed Growth,  Bond and Equity Portfolios each can use various  techniques
to increase or decrease  its  exposure  to changing  security  prices,  interest
rates,  or other  factors that affect  security  values.  These  techniques  may
involve  derivative  transactions such as buying and selling options and futures
contracts and leveraged  notes,  entering into swap  agreements,  and purchasing
indexed   securities.   The  Portfolios  can  use  these  practices   either  as
substitution  or as  protection  against an adverse  move in the  Portfolios  to
adjust the risk and return  characteristics  of the  Portfolios.  If the Advisor
and/or  Sub-Advisor  judges market conditions  incorrectly or employs a strategy
that  does  not  correlate  well  with  a  Portfolio's  investments,  or if  the
counterparty to the transaction  does not perform as promised,  these techniques
could  result in a loss.  These  techniques  may increase  the  volatility  of a
Portfolio  and may involve a small  investment of cash relative to the magnitude
of the risk assumed.  Any  instruments  determined to be illiquid are subject to
the Fund's 10% restriction on illiquid  securities.  See the SAI for more detail
about these strategies.

The Fund may engage in repurchase agreements and reverse repurchase  agreements.
In a  repurchase  agreement,  the Fund buys a security  subject to the right and
obligation  to sell it back at a higher  price.  In order to  minimize  any risk
involved,  the Fund engages in such transactions only with recognized securities
dealers  determined by the Advisor to present a minimal credit risk.  Repurchase
agreements are fully  collateralized and always have a maturity of less than one
year. In a reverse  repurchase  agreement,  the Fund sells a security subject to
the right and obligation to buy it back at a higher price. The Fund then invests
the  proceeds  from  the  transaction  in  another  obligation  in  which  it is
authorized to invest. For reverse repurchase agreements, the Fund maintains in a
segregated account liquid assets equal in value to the repurchase price.


Each Portfolio may borrow money from banks (and pledge its assets to secure such
borrowing)  for  temporary or emergency  purposes,  but not for  leverage.  Such
borrowing may not exceed 10% of the value of that Portfolio's total assets.

The Fund has adopted the following operating (i.e.,  non-fundamental) investment
policies  which may be  changed  by the Board of  Trustees  without  shareholder
approval:

No Portfolio may purchase  illiquid  securities if more than 10% of the value of
that Portfolio's net assets would be invested in such securities.

Each  Portfolio may invest up to 25% of its assets in the  securities of foreign
issuers.  The Portfolios may purchase foreign  securities  directly,  on foreign
markets,  or  through  U.S.   dollar-denominated  American  Depositary  Receipts
("ADRs"),  which are traded in the U.S. on exchanges  or over the counter.  ADRs
are receipts  typically  issued by a U.S. bank or trust  company which  evidence
ownership of underlying securities of a foreign corporation.  Foreign securities
may involve additional risks, including currency fluctuations, risks relating to
political or economic  conditions,  and the potentially less stringent  investor
protection and disclosure standards of foreign markets. These factors could make
foreign investments,  especially those in developing countries,  less liquid and
more  volatile.  By investing in ADRs rather than  directly in foreign  issuers'
stock,  the  Portfolios  can  avoid  currency  and  some  liquidity  risks.  The
information  available for ADRs is subject to the more uniform and more exacting
accounting, auditing and financial reporting standards of the domestic market or
exchange on which they are traded.  The Money Market Portfolio may purchase only
high quality U.S. dollar-denominated instruments.

For further information on the Fund's investment policies and restrictions,  see
the Statement of Additional Information.

Special Equities and Private Placements

Due to the particular  social objective of the Fund,  opportunities may exist to
promote especially promising approaches to social goals through privately placed
investments. The Special Equities Committee of the Board of Trustees identifies,
evaluates, and selects certain of these investments,  subject to ratification by
the Board. The private placement investments undertaken by the Fund, if any, may
be subject to a high degree of risk.  Such  investments  may involve  relatively
small and untried  enterprises  that have been  selected  in the first  instance
because of some attractive social objectives or policies.

Many private  placement  investments  have no readily  available  market and may
therefore be considered  illiquid.  Fund  investments in private  placements and
other  securities  for which market  quotations  are not readily  available  are
valued at fair market value under the direction and control of the Board.

High Social Impact Investments

Each  Portfolio  may  invest  a  small  portion  of  its  respective  assets  in
investments in securities  that offer a rate of return below the then prevailing
market rate and that present attractive  opportunities for furthering the Fund's
social  criteria  ("High  Social Impact  Investments");  such High Social Impact
investments must be less than 1% of the Portfolio's  assets. Such securities are
typically  illiquid and unrated and generally  considered  non-investment  grade
debt  securities  which  involve a greater risk of default or price decline than
investment-grade  securities.  Through  diversification  and credit analysis and
limited  maturity,  investment  risk can be  reduced,  although  there can be no
assurance  that  losses  will not  occur.  The High  Social  Impact  Investments
Committee of the Board  identifies,  evaluates,  and selects these  investments,
subject to ratification by the Board.

YIELD AND TOTAL RETURN


The  Portfolios  may  advertise  different  types  of  yield  and  total  return
performance,  which is calculated  separately  for each class.  All  performance
figures are based on historical earnings and are not intended to indicate future
performance.  Further  information about the Fund's  performance is contained in
its Annual Report to Shareholders, which may be obtained without charge.
Money Market Portfolio

The Money Market  Portfolio may  advertise  "yield" and  "effective  yield." The
"yield" of the Fund refers to the actual  income  generated by an  investment in
the Portfolio over a particular base period, stated in the advertisement. If the
base period is less than one year, the yield will be "annualized."  That is, the
amount of income  generated by the investment  during the base period is assumed
to be  generated  over a  one-year  period and is shown as a  percentage  of the
investment.  The  "effective  yield"  is  calculated  like  yield,  but  assumes
reinvestment of earned income.  The effective yield will be slightly higher than
the yield because of the compounding effect of this assumed reinvestment.
Bond Portfolio

Yield measures the Bond  Portfolio's  current  investment  performance  for each
class, that is, the rate of income on its portfolio  investments  divided by the
share  price of the  class.  Yield is  computed  by  annualizing  the  result of
dividing the net investment income per share over a 30-day period by the maximum
offering  price per share for that class on the last day of that period.  Yields
are calculated  according to accounting  methods that are  standardized  for all
stock and bond funds.

Managed Growth, Bond, and Equity Portfolios

Total return  differs from yield in that yield  figures  measure only the income
component of a Portfolio's investments, while total return includes not only the
effect of income  dividends but also any change in net asset value, or principal
amount,  during the stated period. The total return of a class shows its overall
change in value,  including  changes  in share  price  and  assuming  all of its
dividends and capital gain  distributions  are  reinvested.  A cumulative  total
return  reflects the  performance  of the class over a stated period of time. An
average annual total return reflects the hypothetical  annual  compounded return
that would have produced the same cumulative total return if the performance had
been constant over the entire  period.  Because  average  annual returns tend to
smooth out variations in the returns, you should recognize that they are not the
same as actual  year-by-year  results.  Both  types of total  return for Class A
shares usually will include the effect of paying the front-end sales charge.  Of
course,  total  returns  will be higher  if sales  charges  are not  taken  into
account.  Quotations of "overall  return" do not reflect  deduction of the sales
charge.  You should  consider  overall  return figures only if you qualify for a
reduced sales  charge,  or for purposes of comparison  with  comparable  figures
which also do not reflect sales charges,  such as mutual fund averages  compiled
by Lipper Analytical Services, Inc.

MANAGEMENT OF THE FUND

The Board of Trustees supervises the Fund's activities and reviews its contracts
with companies that provide the Fund with services.

The Fund is an open-end diversified management investment company,  organized as
a Massachusetts business trust on March 15, 1982.

The Fund is not  required  to hold  annual  shareholder  meetings,  but  special
meetings may be called for certain purposes such as electing Trustees,  changing
fundamental policies, or approving a management contract. As a shareholder,  you
receive one vote for each share you own, except that matters  affecting  classes
differently,  such as  Distribution  Plans,  will be voted on  separately by the
affected class(es).


Board of Trustees

REBECCA ADAMSON
President, First Nations Development Institute
RICHARD L. BAIRD, JR.
Director of Finance, Family Health Council, Inc.
JOHN G. GUFFEY, JR.
Chair, Calvert Social Investment Foundation
Treasurer and Director, Silby, Guffey & Co., Inc.
JOY V. JONES, Esq.
Attorney and Entertainment Manager

TERRENCE J. MOLLNER, Ed.D.
Founder and Chair, Trusteeship Institute, Inc.
SYDNEY AMARA MORRIS
 Senior Minister, Unitarian Church of Vancouver, Canada
CHARLES T. NASON
Chairman, President, and Chief Executive Officer, The Acacia Group
D. WAYNE SILBY
President, Secretary, and Director, Silby, Guffey & Co., Inc.
CLIFTON S. SORRELL, JR.
President, Calvert Group, Ltd. and its subsidiaries

Advisory Council

The  Advisory  Council  is  a  resource  to  the  Board  of  Trustees  regarding
communication  networks for the Fund and the  application  and refinement of the
Fund's social criteria.
TIMOTHY SMITH
(Chair) Executive Director, Interfaith Center on Corporate Responsibility
JULIAN BOND
Visiting  Professor,  Harvard  University;   Distinguished  Professor,  American
University
ROBERT BROWNE
President, Twenty-First Century Foundation
WILLIAM J. BYNUM
 President and CEO, Enterprise Corporation for the Delta
MARIAN WRIGHT EDELMAN
President & Founder, Children's Defense Fund
MICHAEL FISCHER
 Executive Director, California State Coastal Conservancy
RANDALL FORSBERG
Executive Director, Institute for Defense and Disarmament Studies

ELIZABETH HARRIS
Vice President, UNC Partners, Inc.
SOPHIA BRACEY HARRIS
Founder and Executive Director,  The Federation of Childcare Centers of Alabama,
Inc.
JAMES E. HEARD
President, Institutional Shareholder Services, Inc.
HAZEL HENDERSON
Independent Futurist and Author
ERICA HUNT
Senior Program Officer, New World Foundation

GRACE LECLAIR
Writer,  Consultant  and Theorist  Concerning the Impacts of Economics on Family
and Community Life

JESSICA LIPNACK
President, The Networking Institute, Inc.
AMORY LOVINS
Director of Research, Rocky Mountain Institute
L. HUNTER LOVINS
President & Executive Director, Rocky Mountain Institute
ROBERT CARTER RANDOLPH
Of Counsel, Hendricks & Lewis
RUSTUM ROY
Professor of Geochemistry, Pennsylvania State University
BYRON RUSHING
State Representative, Massachusetts

MARC DAVID SARKADY
Leadership Consultant on Values & Visions to Renew Corporations & Governments
GAIL SNOWDEN
Division Executive, First Community Bank, Bank of Boston
JEFFREY STAMPS
Chairman, The Networking Institute, Inc.
THOMAS STONEBACK, Vice President and Chief Administrative Officer, Rodale Press,
Inc.
ERIC UTNE
Publisher and Editor, The Utne Reader
DIANE WHITE
Owner, Blackberry


D. Wayne  Silby,  Chair of the Fund's  Board of  Trustees,  and Robert B. Zevin,
Senior Vice  President,  U.S. Trust Company,  serve as ex officio members of the
Advisory Council. Mr. Smith is the chair of the Advisory Council.

Portfolio Managers

Managed Growth Portfolio

The Managed Growth Portfolio is managed by multiple investment sub-advisors,as
approved by the Portfolio's shareholders on August 30, 1995.  With the
multi-manager approach, there will be several investment strategies in place
at any given time in order to help the Portfolio pursue its investment
objectives.  The Managed Growth Portfolio may employ "growth managers," who
generally concentrate on stocks that have demonstrated, or are expected to
produce, earnings growth rates significantly greater than the market as a whole,
as well as "value managers," who tend to make stock selections on the basis of
perceived relative value as determined by a defined model in a bottom-up
approach.

Specifically, CAM will retain a pool of five investment sub-advisors ("Sub-
Advisors"), including U.S. Trust, to manage the Managed Growth Portfolio's 
assets, though they will not necessarily be managing the Portfolio's money at
the same time.  CAM initially will retain two of the five companies, U.S. Trust
and NCM Capital Management Group, Inc., to manage assets, and to manage a
portion of the fixed-income assets itself.  Brown Capital Management, Inc., 
Fortaleza Asset Management, Inc. and Frontier Capital Management, Inc. will not
initially manage Portfolio assets.

Cheryl Smith, Vice President of U.S. Trust is the portfolio manager for the Bond
Portfolio. Ms. Smith joined U.S. Trust in 1992. In addition to the management of
the Bond Portfolio, her duties at U.S. Trust include management of institutional
and individual  client  investment  portfolios and  integration of client social
criteria into the portfolio  management process. She served as Vice President of
Franklin  Research &  Development  from 1987 to 1992.  Ms. Smith has managed the
Bond Portfolio since August 1994. She is a Chartered Financial Analyst and holds
a Ph.D. in Economics from Yale University.

Philip J.  Schettewi,  Managing  Partner,  Vice  President,  and Chief Portfolio
Strategist of Loomis,  Sayles & Company,  L.P., is the portfolio manager for the
Equity Portfolio.  Mr. Schettewi is a Chartered  Financial  Analyst,  and has 12
years experience in the investment business.

Calvert  Group  is  one  of  the  largest  investment  management  firms  in the
Washington, D.C. area.

Calvert Group,  Ltd., parent of the Fund's investment  advisor,  transfer agent,
and  distributor,  is a subsidiary  of Acacia Mutual Life  Insurance  Company of
Washington, D.C. Calvert Group is one of the largest investment management firms
in the  Washington,  D.C. area.  Calvert Group,  Ltd. and its  subsidiaries  are
located at 4550 Montgomery Avenue, Suite 1000N, Bethesda,  Maryland 20814. As of
December 31, 1994,  Calvert Group managed and  administered  assets in excess of
$4.2 billion and more than 200,000 shareholder and depositor accounts.

Calvert Asset Management serves as Advisor to the Fund.

Calvert Asset Management Company,  Inc. (the "Advisor") is the Fund's investment
advisor.  The  Advisor  provides  the  Fund  with  investment   supervision  and
management,  administrative  services and office space;  furnishes executive and
other  personnel to the Fund; and pays the salaries and fees of all Trustees who
are  affiliated  persons of the  Advisor.  The  Advisor  may also assume and pay
certain advertising and promotional  expenses of the Fund and reserves the right
to compensate  broker-dealers  in return for their promotional or administrative
services.

Asset management of the Managed Growth Portfolio will be by a team headed by
Reno J. Martini, Sr. Vice President and Chief Investment Officer.  Mr. Martini
oversees the management of all Calvert portfolios.  He has extensive experience
evaluating and purchasing municipal securities.

U.S. Trust

United States Trust Company of Boston (U.S.  Trust) is the  Sub-Advisor to the
Managed  Growth  and Bond  Portfolios.  U.S.  Trust  also  aids the  Advisor  in
providing social  screening  research to the Advisor for the Fund's Money Market
Portfolio.  U.S. Trust is a  Massachusetts-chartered  commercial  bank with full
trust powers.  It is wholly-owned  and the principal  subsidiary of UST Corp., a
Massachusetts  bank holding company.  It is located at 30 Court Street,  Boston,
Massachusetts  02108.  The Trust Department of U.S. Trust has managed funds as a
fiduciary since 1895.


Robert Zevin, Senior Vice President, Portfolio Strategist and Economist for U.S.
Trust Company,  Boston,  is the portfolio  manager for U.S.  Trust's  portion of
Managed Growth's  Portfolio  assets. He has been with U.S. Trust since 1975. Dr.
Zevin  is a  founder  of  the  socially  responsible  investing  movement  and a
founder-member  of the  Advisory  Council  of the  Fund.  He has  taught  at six
colleges and  universities,  including  Harvard,  University  of  California  at
Berkeley, and Columbia University, and has authored several articles and books.

NCM Capital Management Group, Inc. 

NCM Capital  Management  Group,  Inc.  manages the equity portion of the Managed
Growth  Portfolio as of July 1, 1995.  NCM was founded by Maceo K. Sloan in 1986
as a subsidiary  of North  Carolina  Mutual Life  Insurance  Company,  which was
established  by Mr.  Sloan's  ancestors  in 1898  and is one of the  oldest  and
largest  minority-owned  financial  institutions in the country. NCM has been an
employee-owned  subsidiary of Sloan Financial Group since 1991. Sixty percent of
Sloan  Financial  Group is co-owned by Mr. Sloan and Justin E.  Beckett,  who is
Executive  Vice  President  and a  Director  of NCM.  NCM is one of the  largest
minority-owned investment management firms in the country, and provides products
in equity, fixed income and balanced portfolio management. It is also one of the
industry leaders in the employment and training of minority and women investment
professionals.

NCM's portfolio management team consists of seven members.  Maceo K. Sloan, CFA,
FLMI, is Chairman,  President,  Chief Executive  Officer,  and Chief  Investment
Officer of the company.  He received a BA from Morehouse  College,  and MBA from
Georgia State University, and a JD from North Carolina Central University. He is
a Chartered Financial Analyst,  and is Fellow of the Life Management  Institute.
Mr.  Sloan is a regular  panelist on the PBS program  Wall Street Week in Review
and has been a panelist and chaired several  conferences  concerning  investment
opportunities  in South Africa,  such as the RCB  International  Seminar and the
Pensions 2000 on South Africa.

Clifford  D.  Mpare,  CFA,  CMA,  is  Senior  Vice  President  and  Director  of
Investments.  He received his BComm from St. Mary's  University  and an MBA from
Dalhousie  University.  He is a  Chartered  Financial  Analyst  and a  Certified
Management Accountant. Prior to joining NCM, Mr. Mpare was a Senior Analyst with
First Union Corporation's private equity department, where he specialized in the
valuation of unlisted  securities.  He serves on the board of the Association of
Investment  Management  and  Research,  and is a member  of the  North  Carolina
Society of Financial  Analysts,  the Institute of Chartered  Financial Analysts,
the  Institute  of  Management  Accountants,   and  the  Society  of  Management
Accountants of Canada.

Lawrence  J.  Verny  is a Vice  President.  He  received  his BS from  Fairleigh
Dickinson  University  and  is a CFA  candidate.  Wendell  E.  Mackey  is a Vice
President.  He received his BBA from Howard University,  and an MM from the J.L.
Kellogg Graduate School of Management at Northwestern University.  Mr. Mackey is
a CFA  candidate.  Stephon A. Jackson,  CFA, is a Vice President and Director of
Research.  He received his BS from the  University of North Carolina and his MBA
from The Wharton  School of the  University of  Pennsylvania.  He is a Chartered
Financial Analyst. David C. Carter is a Vice President,  and received his BS and
MBA from New York  University.  Mr. Carter is a CFA candidate.  Lorenzo Newsome,
Jr. is a Vice  President.  He received his BS from the University of Pittsburgh,
an MA from Bowie State University, and is a CFA candidate.

Brown Capital Management, Inc. 

Managed Growth Portfolio
 
Brown Capital  Management,  Inc. of 809 Cathedral Street,  Baltimore,  Maryland,
believes that capital can be enhanced in times of  opportunity  and preserved in
times of adversity without timing the market. The firm uses a bottom-up approach
that incorporates growth-adjusted price earnings. Stocks purchased are generally
undervalued and have momentum, have earnings-per-share growth rates greater than
the  market,  are more  profitable  than the  market,  and have  relatively  low
price-earnings ratios. The firm concentrates on mid-/large-cap growth stocks.

Eddie C. Brown,  Portfolio  Manager,  is founder and  President of Brown Capital
Management. He has over 22 years of investment experience, having served as Vice
President  and  Portfolio  Manager  for 10 years  at T.  Rowe  Price  Associates
immediately  prior to starting his own firm.  Mr. Brown holds a BS in Electrical
Engineering from Howard University,  an MS in Business  Administration  from the
Indiana    University    School   of   Business.    Additionally,    he   is   a
professionally-designated  Chartered Financial Analyst and Chartered  Investment
Counselor.  Mr.  Brown  is  active  in  community  affairs.  He is  currently  a
Commissioner  for Maryland Public  Broadcasting (a  Gubernatorial  appointment),
member of the Board of Directors of the Baltimore Community Foundation (where he
chairs the Investment  Committee for the  foundation's  $30 million  endowment),
member of the Dean's Advisory Council of Indiana  University School of Business,
and a member of The President's Roundtable.

Joel Oppenheim, Portfolio Manager and Executive Vice President, has had 24 years
investment experience for institutions  including the State of Maryland, T. Rowe
Price  Associates,  Inc., the National Rural Electric  Pension and Brown Capital
Management. He holds a B.S. in Economics and Juris Doctor from the University of
Wisconsin, and is a Chartered Financial Analyst.

Robert E. Hall,  Portfolio  Manager  and Sr. Vice  President,  has over 30 years
investment  experience  including 18 years with T. Rowe Price Associates,  Inc.,
seven  years  with  Emerging  Growth  Partners,  Inc.,  and four  years with The
Investment  Center  prior to joining  Brown  Capital  Management.  Mr. Hall is a
former Trustee of the Peabody Institute of Johns Hopkins University.

Fortaleza Asset Management, Inc. 

Managed Growth Portfolio 

Fortaleza  Asset  Management,  Inc.  of 200 West  Adams,  Suite  1901,  Chicago,
Illinois,  60606,  is a  small-cap  growth  manager  that  bases its  investment
principles on three key elements:  (1) a proprietary stock valuation system that
incorporates  technical and market sentiment indicators to determine optimal buy
points;   (2)  an  emphasis  on  the   preservation   of  capital   through  the
implementation  of a strict  selling  discipline  to lock in  capital  gains and
reduce  losses;  and (3) a discipline  that does not force equity  commitment in
overvalued  markets.  The investment  approach is based on a bottom-up selection
process, and concentrates on small-cap growth stocks.

Margarita  Perez is the founder,  President and Portfolio  Manager of Fortaleza,
and has over 13 years of investment experience.  Prior to forming Fortaleza, Ms.
Perez was Vice President and Portfolio Manager for Monetta  Financial  Services,
Inc.,  where she was  directly  involved in the  management  of equity  accounts
totaling in excess of $100 million. Ms. Perez is a native of Puerto Rico and has
lived in the Chicago  area since the late  1960s.  She earned an MBA from DePaul
University  School of Commerce.  Ms.  Perez is a member of various  professional
organizations  including  the American  Institute of CPAs,  National  Society of
Hispanic  MBAs,  Association  for Investment  Management  and Research,  and the
National Association of Securities  Professionals.  She is also a Trustee of the
Chicago Historical Society.

James  Boves,  also a  Portfolio  Manager,  brings  over 25 years of  investment
management and research experience to Fortaleza.  He has an MA in Economics from
Northern Illinois  University and is a member of the Investment Analysts Society
in Chicago.

Frontier Capital Management Inc. 

Managed Growth Portfolio 

Frontier Capital Management is a Boston-based, independent investment management
firm.  Founded in 1980,  Frontier is a research driven firm  specializing in the
management of  growth-oriented  portfolios with particular focus on the small to
medium  capitalization  sectors of the market.  As of December 31, 1994 the firm
managed approximately $1.6 billion in client assets, including over $200 million
in portfolios subject to socially responsible guidelines.  Frontier concentrates
on  small-/mid-cap  growth  stocks.  Frontier has a large team of investment and
trading  professionals.  Those responsible for investing assets of the Portfolio
would be determined  at the time the Advisor  determines to allocate to Frontier
the management of a portion of Portfolio assets.

Loomis, Sayles

Loomis,  Sayles & Company,  L.P.,  (Loomis,  Sayles) is the Sub-Advisor to the
Equity Portfolio,  effective February 1, 1994. A private investment counsel firm
founded  in  1926,  Loomis,  Sayles  is  organized  as  a  limited  partnership,
controlled by New England Mutual Life Insurance Company.  The principal business
address of Loomis, Sayles is One Financial Center, Boston, Massachusetts 02111.

The Advisor  receives a fee based on a percentage of the Fund's assets,  and for
the Managed Growth and Equity  Portfolios only, the performance.  From this, the
Advisor pays the Sub-Advisor.

For its services  during  fiscal year 1994,  the Advisor was entitled to and did
receive,  pursuant  to the  Investment  Advisory  Agreement,  0.50% of the Money
Market  Portfolio's,  0.65% of the Bond  Portfolio's,  and 0.70% of the  Managed
Growth Portfolio's average daily net assets as investment advisory fees.

The Investment Advisory Agreement between the Fund and the Advisor, with respect
to the Managed Growth Portfolio, provides that the Advisor is entitled to a base
annual fee,  payable  monthly,  of 0.70% of the  Portfolio's  average  daily net
assets.  Beginning  January,  1997,  the  Advisor may earn (or have its base fee
reduced by) a performance adjustment based on the extent to which performance of
the Fund  exceeds or trails the  Relevant  Index.  The  Relevant  Indexes are as
follows:

CAM: Lehman Aggregate Bond Index 
U.S. Trust - equity assets: Russell 3000 
U.S. Trust - fixed income assets: Lehman Aggregate Bond Index 
NCM: Standard & Poors 500 Stock Index 
Brown: Standard & Poors 500 Stock Index 
Fortaleza: Russell 2000 
Frontier: 70% Russell 1000, 30% Russell 2000 (Blend) 

         Performance versus                          Performance Fee 
         the Relevant                                Adjustment 
         Index 

         6% to Less than 12%                         0.05% 
         12% to Less than 18%                        0.10% 
         18% or more                                 0.15% 

The Investment Advisory Agreement between the Fund and the Advisor, with respect
to the Equity Portfolio,  provides that the Advisor is entitled to a base annual
fee,  payable  monthly,  of 0.70% of the  Portfolio's  average daily net assets.
Beginning  June,  1995, the Advisor may earn (or have its base fee reduced by) a
performance  adjustment  based on the  extent to which  performance  of the Fund
exceeds or trails the S&P's 500 Composite Index:

         Performance versus                          Performance Fee 
         the S&P's 500                               Adjustment 
         Composite Index 

         6% to Less than 12%                         0.07% 
         12% to Less than 18%                        0.14% 
         18% or more                                 0.20% 

Pursuant to an Investment  Sub-Advisory  Agreement with the Advisor,  U.S. Trust
makes  investment  selections  for the Bond  Portfolio.  For these services U.S.
Trust receives a sub-advisory  fee from the Advisor based on a percentage of the
respective  Portfolio's  average daily net assets (other than High Social Impact
Investments),  subject to a monthly minimum fee of $1,000.  For fiscal 1994, the
Advisor  paid  U.S.  Trust a fee of 0.25% of the  assets of the  Managed  Growth
Portfolio,  and 0.20% of the assets of the Bond Portfolio. The Advisor also pays
a fee to U.S. Trust for providing social screening research for the Money Market
Portfolio.

Investment  selections for a portion of the  fixed-income  assets of the Managed
Growth Portfolio are made by the Investment Advisor,  CAM. The Sub-Advisors make
the  investment  selections  for the  remaining  assets.  Currently,  the active
Sub-Advisors are U.S. Trust and NCM Capital.  Sub-advisory  fees are paid by the
Advisor and are equal to a base fee ("Base Fee") of 0.25% of the Managed  Growth
Portfolio's   average  daily  net  assets,  plus  or  minus  a  performance  fee
("Performance Fee") as set forth in the table above. Payment (or subtraction) of
a Performance  Fee is conditioned  on (1) the  performance of the Portfolio as a
whole having exceeded (or trailed) The Lipper Balanced Fund Index ("Fund Index")
during  the  Performance  Period;  and (2)  payment of the  Performance  Fee not
causing the Portfolio's performance to fall below the Fund Index.

Loomis, Sayles makes investment selections for the Equity Portfolio. It receives
a sub-advisory fee from the Advisor equal to a base fee ("Base Fee") of 0.25% of
the Equity Portfolio's average daily net assets, plus or minus a performance fee
("Performance  Fee") as set  forth  in the  table  above.  Loomis,  Sayles  also
receives a 0.05% fee, paid by the Advisor (not the Fund) for its assistance with
the distribution of the Fund.

Calvert Distributors, Inc. serves as underwriter to market the Fund's shares. 

Calvert  Distributors,  Inc.  ("CDI") is the Fund's  principal  underwriter  and
distributor.  Under the terms of its  underwriting  agreement with the Fund, CDI
markets and  distributes  the Fund's  shares and is  responsible  for  preparing
advertising  and sales  literature,  and  printing and mailing  prospectuses  to
prospective investors.

The transfer agent keeps your account records. 

Calvert Shareholder Services,  Inc. is the Fund's transfer,  dividend disbursing
and shareholder servicing agent.

SHAREHOLDER GUIDE

You can buy shares of the Fund in several ways which are  described  here and in
the chart below.

An account  application  accompanies  this  prospectus.  A completed  and signed
application is required for each new account you open,  regardless of the method
you choose for making your initial investment.  Additional forms may be required
from  corporations,  associations,  and  certain  fiduciaries.  If you  have any
questions  or need extra  applications,  call your broker,  or Calvert  Group at
800-368-2748. Be sure to specify which class you wish to purchase.

To invest in any of Calvert's tax-deferred retirement plans, please call Calvert
Group  at  800-368-2748  to  receive   information  and  the  required  separate
application.

ALTERNATIVE SALES OPTIONS

The  Managed  Growth,  Bond,  and Equity  Portfolios  each offer two  classes of
shares:

Class A Shares - Front End Load Option

Class A shares are sold with a front-end  sales  charge at the time of purchase.
Class A shares are not subject to a sales charge when they are redeemed.


Class C shares - Level Load Option

Class C shares  are sold  without  a sales  charge  at the time of  purchase  or
redemption.

Class C shares have higher expenses

Each Portfolio bears some of the costs of selling its shares under  Distribution
Plans  adopted with  respect to its Class A and Class C shares  pursuant to Rule
12b-1  under the 1940 Act.  Payments  under  the Class A  Distribution  Plan are
limited  to 0.35%  annually  of the  average  daily net  asset  value of Class A
shares.  The Class C  Distribution  Plan  provides  for the payment of an annual
distribution fee to CDI of up to 0.75%, plus a service fee of up to 0.25%, for a
total of 1.00% of the average daily net assets  attributable to their respective
classes.

Considerations for deciding which class of shares to buy

Income  distributions  for Class A shares will probably be higher than those for
Class C shares, as a result of the distribution  expenses  described above. (See
also  Yield  and Total  Return.)  You  should  consider  Class A shares if you
qualify  for a reduced  sales  charge  under  Class A or if you plan to hold the
shares for several years. Class C shares are not available for investments of $1
million or more.

CLASS A SHARES - MANAGED GROWTH AND EQUITY PORTFOLIOS


Class A shares are offered at net asset value plus a front-end  sales  charge as
follows:


<TABLE>
<CAPTION>

                                                                  Concession to
                      As a %                 As a %               Dealers as
                      of Offering            of Net               a %of Amount
Amount of Investment  Price                  Amount Invested      Invested
===============================================================================
<S>                    <C>                   <C>                  <C>  


Less than $50,000      4.75%                 4.99%                4.00%
$50,000 but less
than $100,000          3.75%                 3.90%                3.00%
$100,000 but less
than $250,000          2.75%                 2.83%                2.25%
$250,000 but less
than $500,000          1.75%                 1.78%                1.25%
$500,000 but less
than $1,000,000        1.00%                 1.01%                0.80%
$1,000,000 and
over                   0.00%                 0.00%                0.25%**
</TABLE>


CLASS A SHARES - BOND PORTFOLIO

Class A shares are offered at net asset value plus a front-end  sales  charge as
follows:

<TABLE>
<CAPTION>

                                                                  Concession to
                      As a %                 As a %               Dealers as
                      of Offering            of Net               a %of Amount
Amount of Investment  Price                  Amount Invested      Invested
===============================================================================

<S>                   <C>                    <C>                  <C>   

Less than $50,000     3.75%                  3.90%                3.00%
$50,000 but less
than $100,000         3.00%                  3.09%                2.25%
$100,000 but less
than $250,000         2.25%                  2.30%                1.75%
$250,000 but less
than $500,000         1.75%                  1.78%                1.25%
$500,000 but less
than $1,000,000       1.00%                  1.01%                0.80%
$1,000,000 and
over                  0.00%                  0.00%                0.25%**


**For new investments  (new purchases but not exchanges) of $1 million or more a
broker dealer will have the choice of being paid a finder's fee by CDI in one of
the following methods: (1) CDI may pay broker dealers, on a monthly basis for 12
months,  an annual rate of 0.30%.  Payments  will be made monthly at the rate of
0.025% of the amount of the  investment,  less  redemptions;  or (2) CDI may pay
broker  dealers 0.25% of the amount of the purchase;  however,  CDI reserves the
right to recoup any  portion of the  amount  paid to the dealer if the  investor
redeems  some or all of the shares from the Fund within  thirteen  months of the
time of purchase.
</TABLE>


MANAGED GROWTH, BOND, AND EQUITY PORTFOLIOS

Sales charges on Class A shares may be reduced or  eliminated in certain  cases.
See Exhibit A to this prospectus.

The sales charge is paid to CDI,  which in turn  normally  reallows a portion to
your  broker-dealer.  Upon  written  notice to  dealers  with whom it has dealer
agreements,  CDI may reallow up to the full applicable sales charge.  Dealers to
whom  90% or more of the entire sales  charge is  reallowed  may be deemed to be
underwriters under the Securities Act of 1933.


In  addition  to any sales  charge  reallowance,  your  broker-dealer,  or other
financial  service firm through  which your account is held,  currently  will be
paid periodic service fees at an annual rate of up to 0.25% of the average daily
net asset value of Class A shares held in accounts maintained by that firm.

CLASS A DISTRIBUTION PLAN

All Portfolios

The Fund has adopted a Distribution Plan with respect to its Class A shares (the
Class A  Distribution  Plan),  which provides for payments at a maximum annual
rate of 0.35% (0.25% for the Money Market  Portfolio)  of the average  daily net
asset value of Class A shares, to pay expenses  associated with the distribution
and servicing of Class A shares. Amounts paid by the Fund to CDI under the Class
A  Distribution  Plan are  used to pay to  dealers  and  others,  including  CDI
salespersons who service accounts, service fees at an annual rate of up to 0.25%
of the average  daily net asset value of Class A shares,  and to pay CDI for its
marketing and distribution expenses,  including, but not limited to, preparation
of advertising and sales literature and the printing and mailing of prospectuses
to  prospective  investors.  For the fiscal year ended  September 30, 1994,  the
Managed  Growth,  Bond, and Equity  Portfolios  paid Class A  Distribution  Plan
expenses of 0.24%,  0.08%,  and 0.10% of average net assets,  respectively.  The
Money Market  Portfolio  did not pay any  Distribution  Plan  expenses in fiscal
1994.

Each of the  Distribution  Plans  may be  terminated  at any time by vote of the
Independent  Trustees or by vote of a majority of the outstanding  voting shares
of the respective class.

CLASS C SHARES

Managed Growth, Bond and Equity Portfolios

Class C shares are not available through all dealers. Class C shares are offered
at net asset value,  without a front-end  sales charge or a contingent  deferred
sales charge. Class C expenses are higher than those of Class A.

CLASS C DISTRIBUTION PLAN


The Fund has adopted a Distribution Plan with respect to its Class C shares (the
Class C Distribution  Plan),  which provides for payments at an annual rate of
up to 1.00% of the  average  daily  net asset  value of Class C  shares,  to pay
expenses of the  distribution  and servicing of Class C shares.  Amounts paid by
the Fund under the Class C  Distribution  Plan are currently  used by CDI to pay
dealers and other selling firms dealer-paid quarterly  compensation at an annual
rate of up to 0.75%,  plus a  service  fee as  described  above  under  Class A
Distribution Plan, of up to 0.25%, of the average daily net asset value of each
share sold by such others. For the period from inception (March 1, 1994) through
September 30, 1994, the Class C Distribution  Plan expenses for Managed  Growth,
Bond, and Equity Portfolios were 1.00%,  1.00%, and 1.00% of average net assets,
respectively.

ARRANGEMENTS WITH BROKER-DEALERS AND OTHERS

All Portfolios and all classes

CDI  may  also  pay  additional  concessions,   including  non-cash  promotional
incentives,  such as  merchandise  or trips,  to  dealers  employing  registered
representatives who have sold or are expected to sell a minimum dollar amount of
shares of the Fund and/or  shares of other Funds  underwritten  by CDI.  CDI may
make  expense  reimbursements  for  special  training  of a dealer's  registered
representatives,  advertising  or equipment,  or to defray the expenses of sales
contests.  Eligible marketing and distribution  expenses may be paid pursuant to
the Fund's Rule 12b-1 Distribution Plan.

Dealers or others may receive  different  levels of  compensation  depending  on
which class of shares they sell.  Payments  pursuant to a Distribution  Plan are
included in the operating expenses of the class.


                                HOW TO BUY SHARES
                 (BE SURE TO SPECIFY WHICH CLASS YOU ARE BUYING)

Method        New Accounts                      Additional Investments
========================================================================
By Mail       $1,000 minimum                    $250 minimum

              Please make your                  Please make your
              check payable to the Calvert      check payable to the Calvert
              Social Investment Fund            Social Investment Fund Portfolio
              Portfolio of your choice          of your choice and mail it with
          `   and mail it with your             your investment slip to:
              application to:

              Calvert Group                     Calvert Group
              P.O. Box 419544                   P.O. Box 419739
              Kansas City, MO 64179-6542        Kansas City, MO 64105-6739


By Registered,
Certified, or
Overnight Mail:               Calvert Group
                              c/o NFDS, 6th Floor
                              1004 Baltimore
                              Kansas City, MO 64105-1807


Through       $1,000 minimum                    $250 minimum
Your Broker

At the        Visit the Calvert Branch Office to make investments by check.
Calvert       See back cover page for the address.
Branch Office

FOR ALL OPTIONS BELOW, PLEASE CALL YOUR BROKER, OR CALVERT GROUP AT 800-368-2745

By Exchange   $1,000 minimum                    $250 minimum
(From your account in another Calvert Group Fund)

When opening an account by exchange,  your new account must be established  with
the same name(s),  address and taxpayer  identification  number as your existing
Calvert account.

By Bank Wire   $1,000 minimum                   $250 minimum

By Calvert     Not Available for                $50 minimum
Money          Initial Investment
Controller*

*Please allow  sufficient time for Calvert Group to process your initial request
for this service,  normally 10 business days. The maximum  transaction amount is
$300,000, and your purchase request must be received by 4:00 p.m. Eastern time.

NET ASSET VALUE

The Money Market Portfolio shares are sold without a sales charge.

Money Market Portfolio: The price of one share is its "net asset value," or NAV.
NAV is  computed  by adding  the value of the Fund's  investments  plus cash and
other assets,  deducting  liabilities and then dividing the result by the number
of shares  outstanding.  The securities  are valued  according to the "amortized
cost" method, which is intended to stabilize the NAV at $1.00 per share.


Managed Growth, Bond, and Equity Portfolios: Net asset value, or "NAV" refers to
the worth of one share.  NAV is  computed  by adding the value of all  portfolio
holdings, plus other assets,  deducting liabilities and then dividing the result
by the  number of shares  outstanding.  The NAVs of each  class  will vary daily
based on the market values of the Portfolio's investments.

Portfolio  securities  and other assets are valued  based on market  quotations,
except that securities  maturing within 60 days are valued at amortized cost. If
quotations are not  available,  securities are valued by a method that the Board
of Trustees believes accurately reflects fair value.

The NAV is calculated at the close of the Fund's  business day, which  coincides
with the closing of the regular session of the New York Stock Exchange (normally
4:00 p.m.  Eastern  time).  The Fund is open for business  each day the New York
Stock  Exchange is open.  All  purchases  of Fund shares will be  confirmed  and
credited to your account in full and fractional  shares  (rounded to the nearest
1/1000 of a share).  The Money Market  Portfolio may send monthly  statements in
lieu of immediate confirmations of purchases and redemptions.

WHEN YOUR ACCOUNT WILL BE CREDITED

Before you buy shares,  please read the following  information to make sure your
investment is accepted and credited properly.

All of your purchases  must be made in U.S.  dollars and checks must be drawn on
U.S. banks. No cash will be accepted. The Fund reserves the right to suspend the
offering  of  shares  for a period of time or to reject  any  specific  purchase
order.  If your check does not clear,  your  purchase  will be canceled and you
will be charged a $10 fee plus costs incurred by the Fund.  When you purchase by
check or with Calvert Money Controller, those funds will be on hold for up to 10
business days from the date of receipt. During that period,  redemptions against
those funds  (including  drafts) will not be honored.  To avoid this  collection
period, you can wire federal funds from your bank, which may charge you a fee.
Money Market Portfolio

Your  purchase  will be processed at the net asset value  calculated  after your
order is received and accepted. If your purchase is made by wire and is received
by 12:30 p.m.  (Eastern  time),  your account will be credited and begin earning
dividends on the day of receipt.  If your wire purchase is received  after 12:30
p.m.  Eastern time, it will be credited the same business day, and begin earning
dividends the next  business day.  Exchanges are credited the day the request is
received by mail or  telephone,  and begin  earning  dividends the next business
day. If the purchase is by check,  and received by 4:00 p.m.  Eastern  time,  it
will be credited that day, and begin earning dividends the next business day.
Managed Growth, Bond, and Equity Portfolios

Your purchase will be processed at the next offering price based on the next net
asset value calculated for each class after your order is received and accepted.
If your  purchase  is made by wire or  exchange  and is  received  by 4:00  p.m.
(Eastern  time),  your account  will be credited on the day of receipt.  If your
purchase is received after 4:00 p.m.  Eastern time, it will be credited the next
business day.

Certain financial institutions or broker-dealers which have entered into a sales
agreement with the Distributor may enter confirmed  purchase orders on behalf of
customers by phone,  with payment to follow  within a certain  number of days of
the order as specified  by the  program.  If payment is not received in the time
specified,  the financial institution could be held liable for resulting fees or
losses.

EXCHANGES

You may  exchange  shares  of the Fund  for  shares  of the same  class of other
Calvert Group Funds.

If your investment goals change, the Calvert Group Family of Funds has a variety
of investment  alternatives  that includes  common stock funds,  tax-exempt  and
corporate  bond funds,  and money  market  funds.  The  exchange  privilege is a
convenient way to buy shares in other Calvert Group Funds in order to respond to
changes in your goals or in market conditions.  Before you make an exchange from
a Fund or Portfolio, please note the following:

o Call your broker or a Calvert  representative for information and a prospectus
for any of Calvert's other Funds  registered in your state.  Read the prospectus
of the  Fund  or  Portfolio  into  which  you  want  to  exchange  for  relevant
information, including class offerings.

Each exchange represents the sale of shares of one Portfolio and the purchase of
shares of another.  Therefore,  you could  realize a taxable gain or loss on the
transaction.

o Complete  and sign an  application  for an account in that Fund or  Portfolio,
taking  care to  register  your  new  account  in the  same  name  and  taxpayer
identification number as your existing Calvert account(s). Exchange instructions
may then be given by telephone if telephone redemptions have been authorized and
the shares are not in certificate form.

o Shares on which you have  already  paid a sales  charge at  Calvert  Group and
shares acquired by reinvestment of dividends or  distributions  may be exchanged
into another Fund at no additional charge.

o Shareholders (and those managing multiple accounts) who make two purchases and
two  exchange  redemptions  of shares of the same  Portfolio  during any 6-month
period  will be given  written  notice that they may be  prohibited  from making
additional  investments.  This  policy  does not  prohibit  a  shareholder  from
redeeming  shares of the Fund,  and does not apply to trades  solely among money
market funds.

The Fund reserves the right to terminate or modify the exchange  privilege  with
60 days' written notice.

OTHER CALVERT GROUP SERVICES


CALVERT INFORMATION NETWORK
24 hour yield and prices

Calvert  Group  has a  round-the-clock  telephone  service  that  lets  existing
customers use a push button phone to obtain prices, yields, account balances,
and authorize certain transactions.

CALVERT MONEY CONTROLLER

Calvert Money Controller  eliminates the delay of mailing a check or the expense
of wiring funds. You can request this free service on your application.

This service allows you to authorize  electronic  transfers of money to purchase
or sell shares.  You use Calvert Money Controller like an "electronic  check" to
move money ($50 to $300,000)  between  your bank account and your Calvert  Group
account with one phone call.  Allow one or two business  days after the call for
the  transfer to take place;  for money  recently  invested,  allow normal check
clearing time (up to 10 business  days) before  redemption  proceeds are sent to
your bank.

You may also arrange systematic monthly or quarterly  investments  (minimum $50)
into your Calvert Group account.  After you give us proper  authorization,  your
bank account will be debited to purchase Fund shares.  A debit entry will appear
on your bank statement.  If you would like to make  arrangements  for systematic
monthly or quarterly  redemptions  from your Calvert  Group  account,  call your
broker or Calvert for a Money Controller Application.

TELEPHONE TRANSACTIONS

Calvert may record all telephone calls.

If you have  telephone  transaction  privileges,  you may purchase,  redeem,  or
exchange shares,  wire funds and use Calvert Money Controller by telephone.  You
automatically  have telephone  privileges unless you elect otherwise.  The Fund,
the transfer agent and their  affiliates are not liable for acting in good faith
on  telephone  instructions  relating  to your  account,  so long as they follow
reasonable procedures to determine that the telephone  instructions are genuine.
Such  procedures  may include  recording the telephone  calls and requiring some
form of personal  identification.  You should  verify the  accuracy of telephone
transactions immediately upon receipt of your confirmation statement.

Complete  the  "Option"  sections  of the  application  for the  easiest  way to
establish services.

The easiest way to establish  optional services on your Calvert Group account is
to select the options you desire when you complete your account application.  If
you wish to add other options later,  you may have to provide us with additional
information  and a  signature  guarantee.  Please  call your  broker or  Calvert
Investor  Relations  at  800-368-2745  for  further  assistance.  For our mutual
protection,  we may require a signature guarantee on certain written transaction
requests. A signature guarantee verifies the authenticity of your signature, and
may be obtained from any bank, savings and loan association, credit union, trust
company,  broker-dealer firm or member of a domestic stock exchange. A signature
guarantee cannot be provided by a notary public.

You can help in an effort to reduce Fund  expenses  and save paper and trees for
the environment.

HOUSEHOLDING OF GENERAL MAILINGS

Householding reduces Fund expenses and saves paper and trees for the
environment.

If you have multiple accounts with Calvert, you may receive combined mailings of
some  shareholder  information,  such as semi-annual and annual reports.  Please
contact Calvert Investor  Relations at 800-368-2745 to receive additional copies
of information.

SPECIAL SERVICES AND CHARGES

The Fund pays for  shareholder  services but not for special  services  that are
required by a few shareholders, such as a request for a historical transcript of
an  account.  You  may be  required  to pay a  research  fee for  these  special
services.

If you are purchasing  shares of the Fund through a program of services  offered
by a  broker-dealer  or  financial  institution,  you  should  read the  program
materials in conjunction with this Prospectus.  Certain features may be modified
in  these  programs,   and   administrative   charges  may  be  imposed  by  the
broker-dealer or financial institution for the services rendered.

TAX-SAVING RETIREMENT PLANS

Contact Calvert Group for complete  information  kits discussing the plans,  and
their benefits, provisions and fees.

Calvert  Group can set up your new  account  under one of  several  tax-deferred
plans.  These plans let you invest for  retirement  and shelter your  investment
income from current taxes.  Minimums may differ from those listed in the (How to
Buy Shares)  chart.  Also,  reduced  sales  charges may apply.  See (Exhibit A
Reduced Sales Charges.)

o  Individual  retirement  accounts  (IRAs):  available to anyone who has earned
income.  You may also be able to make investments in the name of your spouse, if
your spouse has no earned income.

o Qualified  Profit-Sharing and  Money-Purchase  Plans (including 401(k) Plans):
available to  self-employed  people and their partners,  or to corporations  and
their employees.

o Simplified Employee Pension Plan (SEP-IRA):  available to self-employed people
and their partners, or to corporations.  Salary reduction pension plans (SAR-SEP
IRAs) are also available to employers with 25 or fewer employees.

o 403(b)(7)  Custodial  Accounts:  available  to  employees  of most  non-profit
organizations and public schools and universities.

SELLING YOUR SHARES


You may redeem all or a portion of your shares on any business  day. Your shares
will be redeemed at the next net asset value  calculated  after your  redemption
request is received and accepted.  See below for specific requirements necessary
to make sure your redemption  request is acceptable.  Remember that the Fund may
hold payment on the  redemption of your shares until it is reasonably  satisfied
that  investments  made by  check  or by  Calvert  Money  Controller  have  been
collected (normally up to 10 business days).


REDEMPTION REQUIREMENTS TO REMEMBER

To ensure  acceptance of your redemption  request,  please follow the procedures
described here and below.

Once your shares are redeemed,  the proceeds will normally be sent to you on the
next business day, but if making  immediate  payment could adversely  affect the
Fund,  it may take up to seven (7) days.  Calvert Money  Controller  redemptions
generally will be credited to your bank account on the first or second  business
day after your phone call.  When the New York Stock  Exchange is closed (or when
trading is  restricted)  for any  reason  other  than its  customary  weekend or
holiday  closings,  or under any  emergency  circumstances  as determined by the
Securities  and  Exchange  Commission,  redemptions  may be suspended or payment
dates postponed.

Money Market Portfolio

If you sell shares by telephone or written request,  you will receive  dividends
through the date the request is received and processed.  If you write a draft to
sell shares,  the shares will earn dividends until the draft is presented to the
Portfolio to be paid.

Minimum account balance is $1,000 per Portfolio.

Please maintain a balance in your account of at least $1,000 per Portfolio,  per
class.  If, due to redemptions,  the account falls below $1,000,  or you fail to
invest at least  $1,000,  your account may be closed and the proceeds  mailed to
you at the address of record. You will be given notice that your account will be
closed after 30 days unless you make an  additional  investment to increase your
account balance to the $1,000 minimum.

HOW TO SELL YOUR SHARES

Draftwriting
(Money Market Portfolio only)

You may redeem shares in your Money Market Portfolio  account by writing a draft
for  at  least  $250.  If  you  complete  and  return  the  signature  card  for
Draftwriting, the Portfolio will mail bank drafts to you, printed with your name
and address.  Generally,  there is no charge to you for the  maintenance of this
service or the clearance of drafts,  but the Fund reserves the right to charge a
service  fee for  drafts  returned  for  insufficient  funds.  As a  service  to
shareholders,  the  Portfolio  may  automatically  transfer  the  dollar  amount
necessary to cover drafts you have  written on the  Portfolio to your  Portfolio
account from any other of your identically  registered accounts in Calvert money
market  funds or  Calvert  Insured  Plus.  The  Fund  may  charge a fee for this
service.

By Mail To:

Calvert Group
P.O. Box 419544
Kansas City, MO
64179-6544

You may  redeem  available  shares  from your  account  at any time by sending a
letter of instruction,  including your name,  account and Portfolio number,  the
number  of shares  or  dollar  amount,  and where you want the money to be sent.
Additional  requirements,  below,  may  apply to your  account.  The  letter  of
instruction must be signed by all required  authorized  signers. If you want the
money to be wired to a bank not previously authorized,  then a voided bank check
must be enclosed  with your letter.  If you do not have a voided check or if you
would like funds sent to a different address or another person, your letter must
be signature guaranteed.

     TYPE OF
     REGISTRATION           REQUIREMENTS

     Corporations,
     Associations           Letter of instruction and a
                            corporate resolution,
                            signed by person(s)  authorized
                            to act on the account,
                            accompanied by signature guarantee(s).

     Trusts                 Letter  of   instruction   signed
                            by  the   Trustee(s)  (as
                            Trustee),  with a  signature
                            guarantee.  (If the  Trustee's
                            name is not  registered on
                            your  account,  provide a
                            copy of the trust document,
                            certified within the last 60 days.)

By Telephone

Please call  800-368-2745.  You may redeem shares from your account by telephone
and have your money  mailed to your  address of record or wired to an address or
bank you have previously authorized. A charge of $5 is imposed on wire transfers
of less than $1,000. See "Telephone Transactions."

Calvert Money Controller

Please allow  sufficient  time for Calvert Group to process your initial request
for this service  (normally 10 business days). You may also authorize  automatic
fixed amount  redemptions  by Calvert  Money  Controller.  All requests  must be
received by 4:00 p.m. (Eastern time). Accounts cannot be closed by this service.

Exchange to Another Calvert Group Fund

You must meet the minimum investment requirement of the other Calvert Group Fund
or Portfolio.  You can only exchange  between  accounts  with  identical  names,
addresses and taxpayer  identification number, unless previously authorized with
a signature-guaranteed letter.

Systematic Check Redemptions

If you maintain an account with $10,000 or more, you may have up to two (2)
redemption  checks for $100 or more sent to you on the 15th of each  month,  
simply by sending a letter with all the information,  including your account 
number,  and the dollar amount  ($100  minimum).  If you would  like a regular 
check  mailed to another person or place, your letter must be signature 
guaranteed.

Through your Broker

If your  account  is held in your  broker's  name  ("street  name"),  you should
contact your broker directly to transfer, exchange or redeem shares.

DIVIDENDS AND TAXES

Each year, the Fund distributes  substantially  all of its net investment income
to shareholders.

Dividends from the Money Market  Portfolio's  net investment  income are accrued
daily and paid monthly.  The Managed Growth Portfolio pays dividends  quarterly,
the Bond  Portfolio  pays  dividends  monthly,  and the  Equity  Portfolio  pays
dividends  annually.  Net investment  income  consists of interest  income,  net
short-term   capital  gains,  if  any,  and  dividends   declared  and  paid  on
investments,  less expenses.  Distributions of the Fund's net short-term capital
gains  (treated as dividends for tax  purposes)  and its net  long-term  capital
gains,  if any,  are  normally  paid  once a year;  however,  the Fund  does not
anticipate  making  any  such   distributions   unless  available  capital  loss
carryovers have been used or have expired.  Dividend and  distribution  payments
will vary between  classes;  dividend  payments are  anticipated to be generally
higher for Class A shares.

Dividend payment options (available monthly or quarterly)


Dividends  and  any  distributions  are  automatically  reinvested  in the  same
Portfolio  at net asset  value (no sales  charge),  unless you elect to have the
dividends of $10 or more paid in cash (by check or by Calvert Money Controller).
Dividends and distributions from any Calvert Group Fund or Portfolio may be  
automatically  invested in an identically registered account with the same 
account number in any other Calvert Group Fund at net asset  value.  If  
reinvested  in the same Fund  account,  new shares will be purchased at net 
asset value on the  reinvestment  date, which is generally  1 to 3 days prior to
the  payment  date.  You must notify the Fund in writing to change your payment
options.  If you elect to have dividends  and/or distributions  paid in cash,  
and the U.S.  Postal  Service  cannot  deliver the check, or if it remains 
uncashed for six months, it, as well as future dividends and distributions, will
be reinvested in additional shares.

(Buying a Dividend)

At the time of  purchase,  the share price of each class of the Managed  Growth,
Bond, and Equity Portfolios may reflect undistributed  income,  capital gains or
unrealized  appreciation  of securities.  Any income or capital gains from these
amounts which are later distributed to you are fully taxable. On the record date
for a  distribution,  the  Fund's  share  value is  reduced by the amount of the
distribution.  If you  buy  shares  just  before  the  record  date  ("buying  a
dividend") you will pay the full price for the shares and then receive a portion
of the price back as a taxable distribution.

Federal Taxes

In  January,  the Fund will mail you Form  1099-DIV  indicating  the federal tax
status of dividends and any capital gain  distributions  paid to you by the Fund
during the past year. Generally,  dividends and distributions are taxable in the
year they are paid. However, any dividends and distributions paid in January but
declared  during  the prior  three  months  are  taxable  in the year  declared.
Dividends and  distributions  are taxable to you  regardless of whether they are
taken in cash or reinvested.  Dividends, including short-term capital gains, are
taxable as ordinary  income.  Distributions  from  long-term  capital  gains are
taxable as long-term  capital gains,  regardless of how long you have owned Fund
shares.

Managed Growth, Bond, and Equity Portfolios

You may realize a capital  gain or loss when you sell or exchange  shares.  This
capital gain or loss will be short- or long-term, depending on how long you have
owned the shares which were sold. In January,  the Portfolios will mail you Form
1099-B indicating the total amount of all sales, including exchanges. You should
keep your annual  year-end  account  statements to determine the cost (basis) of
the shares to report on your tax returns.

Other Tax Information

In addition to federal taxes, you may be subject to state or local taxes on your
investment,  depending  on the laws in your area.  You will be  notified  to the
extent, if any, that dividends  reflect interest  received from U.S.  government
securities. Such dividends may be exempt from certain state income taxes.

Taxpayer Identification Number

If we do not have your correct Social Security or Taxpayer Identification Number
("TIN") and a signed certified application or Form W-9, Federal law requires the
Fund to withhold 31% of your dividends,  and, for the Managed Growth,  Bond, and
Equity Portfolios,  31% of certain redemptions.  In addition, you may be subject
to a fine. You will also be prohibited from opening another account by exchange.
If this TIN  information  is not  received  within 60 days after your account is
established,  your  account may be  redeemed  (closed) at the current NAV on the
date of redemption. The Fund reserves the right to reject any new account or any
purchase order for failure to supply a certified TIN.



EXHIBIT A - REDUCED SALES CHARGES (CLASS A ONLY)

You may  qualify for a reduced  sales  charge  through  several  purchase  plans
available. You must notify the Fund at the time of purchase to take advantage of
the reduced sales charge.

Right of Accumulation. The sales charge is calculated by taking into account not
only the dollar amount of a new purchase of shares,  but also the higher of cost
or current  value of shares  previously  purchased  in Calvert  Group Funds that
impose sales charges.  This  automatically  applies to your account for each new
purchase.

Letter of Intent.  If you plan to  purchase  $50,000 or more of Fund shares over
the next 13  months,  your  sales  charge  may be  reduced  through a "Letter of
Intent." You pay the lower sales charge  applicable to the total amount you plan
to invest over the 13-month  period,  excluding any money market fund purchases.
Part of your  shares  will be held in  escrow,  so that if you do not invest the
amount  indicated,  you will  have to pay the  sales  charge  applicable  to the
smaller  investment  actually made. For more  information,  see the Statement of
Additional Information.

Group  Purchases.  If you are a member of a qualified  group,  you may  purchase
shares of the Fund at the reduced sales charge  applicable to the group taken as
a whole.  The sales  charge is  calculated  by taking into  account not only the
dollar amount of the shares you purchase, but also the higher of cost or current
value of shares previously purchased and currently held by other members of your
group.

A  "qualified  group" is one which (i) has been in  existence  for more than six
months,  (ii) has a purpose other than acquiring Fund shares at a discount,  and
(iii)  satisfies  uniform  criteria  which enable CDI and dealers  offering Fund
shares to realize  economies of scale in distributing  such shares.  A qualified
group must have more than 10  members,  must be  available  to arrange for group
meetings  between  representatives  of CDI or  dealers  distributing  the Fund's
shares,  must agree to include sales and other materials  related to the Fund in
its  publications  and  mailings  to  members  at  reduced  or no cost to CDI or
dealers,  and  must  seek  to  arrange  for  payroll  deduction  or  other  bulk
transmission of investments to the Fund.

Pension plans may not qualify  participants for group purchases;  however,  such
plans may qualify for reduced  sales  charges  under a separate  provision  (see
below). Members of a group are not eligible for a Letter of Intent.

Retirement Plans Under Section 457, Section 403(b)(7),  or Section 401(k). There
is no sales  charge on shares  purchased  for the benefit of a  retirement  plan
under S 457 of the Internal Revenue Code of 1986, as amended ("Code"),  or for a
plan  qualifying  under S  403(b)(7)  of the Code if,  at the time of  purchase,
Calvert Group has been notified in writing that the 403(b)(7)  plan has at least
200  eligible  employees.  Furthermore,  there  is no  sales  charge  on  shares
purchased for the benefit of a retirement plan qualifying  under S 401(k) of the
Code  if,  at the time of such  purchase,  the  401(k)  plan  administrator  has
notified  Calvert  Group in  writing  that a) its  401(k)  plan has at least 200
eligible  employees;  or b) the cost or current  value of shares the plan has in
Calvert Group of Funds (except money market funds) is at least $1 million.

Neither the Fund,  nor CDI, nor any affiliate  thereof will  reimburse a plan or
participant  for any  sales  charges  paid  prior  to  receipt  of such  written
communication and confirmation by Calvert Group. Plan administrators should send
requests  for the  waiver of sales  charges  based on the above  conditions  to:
Calvert Group Retirement Plans, 4550 Montgomery Avenue,  Suite 1000N,  Bethesda,
Maryland 20814.

Other  Circumstances.  There is no sales charge on shares of any fund (portfolio
or series) of the Calvert Group of Funds sold to:

(1)  current  and  retired  members  of the Board of  Trustees/Directors  of the
Calvert  Group of  Funds,  (and  the  Advisory  Council  of the  Calvert  Social
Investment  Fund);  (2)  directors,  officers  and  employees  of  the  Advisor,
Distributor,  and  their  affiliated  companies;  (3)  directors,  officers  and
registered  representatives  of  brokers  distributing  the Fund's  shares;  and
immediate  family  members  of persons  listed in (1),  (2),  or (3) above;  (4)
dealers,  brokers,  or registered  investment advisors that have entered into an
agreement  with CDI  providing  specifically  for the use of  shares of the Fund
(Portfolio or Series) in particular  investment programs or products (where such
program or product  already has a fee charged  therein)  made  available  to the
clients of such dealer,  broker,  or registered  investment  advisor;  (5) trust
departments of banks or savings  institutions  for trust clients of such bank or
savings  institution;  and (6) purchases placed through a broker  maintaining an
omnibus  account with the Fund  (Portfolio or Series) and the purchases are made
by (a) investment  advisors or financial  planners  placing trades for their own
accounts  (or the  accounts  of their  clients)  and who  charge  a  management,
consulting,  or other fee for their services;  or (b) clients of such investment
advisors or  financial  planners who place trades for their own accounts if such
accounts  are  linked  to the  master  account  of such  investment  advisor  or
financial  planner  on the  books and  records  of the  broker or agent;  or (c)
retirement  and  deferred  compensation  plans and  trusts,  including,  but not
limited  to,  those  defined in S 401(a) or S 403(b) of the  I.R.C.,  and (rabbi
trusts.)

Established Accounts.  Shares of the Managed Growth Portfolio may be sold at net
asset value to accounts opened on or before July 17, 1986.

Dividends and Capital Gain Distributions from other Calvert Group Funds. You may
prearrange to have your  dividends and capital gain  distributions  from another
Calvert Group Fund automatically  invested in another account with no additional
sales charge.  Dividends and distributions from Calvert Group money market funds
used to purchase shares of the Fund will not be subject to the applicable  sales
charge.

Reinstatement  Privilege.  If you redeem  Fund  shares  and then  within 30 days
decide to reinvest  in the same Fund,  you may do so at the net asset value next
computed after the reinvestment  order is received,  without a sales charge. You
may use the  reinstatement  privilege  only once. The Fund reserves the right to
modify or eliminate this privilege.


To Open an Account:              Prospectus
800-368-2748                     January 31, 1995 As Revised September 30, 1995

Performance and Prices:
Calvert Information Network      CALVERT SOCIAL INVESTMENT FUND
24 hours, 7 days a week              Money Market Portfolio
800-368-2745                         Managed Growth Portfolio
                                     Bond Portfolio
                                     Equity Portfolio


Service for Existing Account:
Shareholders         800-368-2745
Brokers              800-368-2746

TDD for Hearing Impaired:
800-541-1524

Branch Office:
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

Registered, Certified or
Overnight Mail:
Calvert Group
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814

Calvert Group
c/o NFDS, 6th Floor
1004 Baltimore
Kansas City, MO 64105


PRINCIPAL UNDERWRITER
Calvert Distributors, Inc.
4550 Montgomery Avenue
Suite 1000N
Bethesda, Maryland 20814



Inside Front Cover:




TABLE OF CONTENTS

Highlights
Fund Expenses
Financial Highlights
Investment Objectives and Policies
Investment Selection Process
Additional Investment Policies
Yield and Total Return
Management of the Fund
SHAREHOLDER GUIDE:
Alternative Sales Options
How to Buy Shares
Net Asset Value
When Your Account Will Be Credited
Exchanges
Other Calvert Group Services
Selling Your Shares
How to Sell Your Shares
Dividends and Taxes
Exhibit A - Reduced Sales Charges





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